The Wolfpack is a pack made by Alan Garner, in which he added Doug Billings, Stu Price, Philip Wenneck, Leslie Chow and later Teddy. Together, they have wild adventures as they have run crazy through the streets of Las Vegas, Bangkok, and Los Angeles.
First Adventure (Las Vegas)Edit
Celebrating his upcoming marriage to Tracy Garner (Sasha Barrese), Doug Billings (Justin Bartha) travels with his best friends Phil Wenneck (Bradley Cooper), Stu Price (Ed Helms), and Tracy's brother and Doug's future brother-in-law Alan (Zach Galifianakis) to Las Vegas in Alan's father's Mercedes-Benz for a bachelor party, staying at Caesars Palace. They relax in the room and go to a casino, and celebrate with few drinks on the hotel rooftop. The next morning, Phil, Stu and Alan awaken to find they have no memory of the previous night, and Doug is nowhere to be found. Stu is missing a tooth, their hotel suite is in disarray, a tiger is in their bathroom, a chicken in their living room, and a baby is in the closet, whom they name "Carlos". They find Doug's mattress impaled on a statue outside of their hotel and when they ask for their Mercedes, the valet delivers an LVPD police cruiser.
Following clues to their steps, the trio travel to a hospital where they discover they were drugged with rohypnol ("roofies"), causing their memory loss, and that they came to the hospital from a chapel. At the chapel, they learn that Stu married a stripper, Jade (Heather Graham), despite having a long-term relationship with his mean-spirited girlfriend, Melissa (Rachael Harris). Outside the chapel, the trio are attacked by gangsters, saying they are looking for someone. They flee and visit Jade, discovering that she is the mother of the baby, whose real name is Tyler, before being arrested by the police for stealing the police cruiser. Having been told that the Mercedes has been impounded, the trio is released when they volunteer to be targets for a taser demonstration, unknowingly. While driving the Mercedes, they discover a naked Chinese guy in the trunk who attacks them and flees. Alan confesses that he drugged their drinks to ensure they had a good night, thinking the drug to be ecstasy.
Returning to their villa, they find Mike Tyson, who orders the trio to return the tiger to his mansion immediately. Stu drugs the tiger with the remaining rohypnol and they drive towards Tyson's home in the Mercedes, but the tiger attacks them, claws Phil on his neck, and damages the car's interior. After pushing the car the rest of the way to the mansion, Tyson shows the trio footage of them at his house to help them locate Doug. While driving, their car is struck by another vehicle intentionally; the passengers are revealed to be the gangsters from the chapel and their boss, Leslie Chow (Ken Jeong) – the naked man from their trunk – who accuses the trio of stealing $80,000 of his money that was in his purse and kidnapping him. As the guys try to deny this, Chow says he has their friend, and threatens to kill him if his money is not returned. Unaware of the location of Chow's $80,000, Alan, with help from Stu and Jade, uses his knowledge of card counting to win $82,400 playing Blackjack.
They meet with Chow and exchange the money, only to find that "Doug" is an African-American drug dealer (nicknamed Black Doug by the trio), who inadvertently sold Alan the roofies. With the wedding occurring in 5 hours, Phil phones Tracy, telling her that they cannot find Doug. After a conversation with "Black Doug" (Mike Epps), Stu realizes where Doug is. The trio travel back to their hotel where they find Doug on the roof, moved there on his mattress while he was asleep, as a practical joke by Stu, Phil and Alan. Doug's mattress had been thrown there by Doug himself, in an attempt to signal for help. Before leaving, Stu makes arrangements to go on a date with Jade the following week. With less than four hours before the wedding and with no flights to L.A. available, the foursome race home, with Doug revealing he has possession of Chow's original $80,000. Despite their late arrival, Doug and Tracy are married and Stu breaks up with Melissa after having grown tired of her controlling his life. As the reception ends, Alan finds Stu's digital camera detailing the events they cannot remember and the four agree to look at the pictures together before deleting the evidence of their exploits.
Second Adventure (Bangkok)Edit
Two years after their escapade in Las Vegas, Stu Price, Phil Wenneck, Alan Garner and Doug Billings travel to Thailand to celebrate Stu's impending wedding to Lauren. Much to Alan's dismay, they are joined by Lauren's younger brother, Teddy. During Lauren's father's toast, he shows his disapproval of Stu by comparing him to congee. At the end of the night, Stu hesitantly joins Phil, Doug, Alan and Teddy for a beer. Sitting at a campfire and roasting marshmallows, the group toast to Stu and Lauren's future happiness.
The next morning, Phil, Stu and Alan, along with flamboyant gangster Leslie Chow—whom Alan befriended after Las Vegas—and a chain-smoking capuchin monkey, awaken in a dirty hotel room in Bangkok. Stu has a face tattoo (a replica of Mike Tyson's tattoo) and Alan's head is completely shaved. They cannot find Teddy, and discover only his severed finger. Chow begins recalling the events of the prior night, but he seemingly dies after snorting a line of cocaine. Panicked, the trio dispose of Chow's body in an ice box.
Through a tip from Doug who is still at the resort (he left the campfire earlier than the others), they go to a prison to pick up Teddy but are given a wheelchair-bound elderly Buddhist monk, who knows more about what happened, but does not reveal anything: he has taken a vow of silence, and rejects also an alternative such as writing something down. After finding a business card, they travel to a neighborhood smouldering in ruins. They enter a nearby tattoo parlor where Stu got his tattoo, and they learn that they had started a fight that escalated into a riot. The trio then return the monk to his Buddhist temple, where they are encouraged by the head monk to meditate. Alan is able to recall that they had been at a strip club. There, they learn that Stu had engaged in sex with a kathoey prostitute. Upon exiting, the trio is attacked by two Russian mobsters from whom they had stolen the monkey, and Phil is shot in the arm.
After Phil is treated at a clinic, Alan confesses that he had drugged some of the marshmallows from the previous night with muscle relaxants and ADHD medication in order to sedate Teddy but accidentally mixed up the bags. After noticing an address and time point for a meeting written on Alan's stomach, the trio meet up with another gangster, Kingsley, who demands Chow's bank account code and password by the next morning in exchange for Teddy. They return to the hotel to try to find Chow's password, only to discover that he is still alive. They steal the monkey (who had the code given to him by Chow inside his jacket for safe-keeping) back from the Russian mobsters through a violent car chase, during which the monkey is shot and injured. After taking the code and leaving the monkey at a veterinary clinic, the group complete the deal with Kingsley. Suddenly, Interpol agents appear and arrest Chow. Kingsley turns out to be an undercover agent, who tells the trio that the police had used the information that Teddy had disappeared to arrest Chow and Kingsley actually does not know where Teddy is.
Desperate and out of clues, Phil once again calls Doug's wife Tracy. Stu then has an epiphany and the trio rushes back to the hotel and find Teddy in the elevator unharmed (albeit still missing a finger). Teddy had woken up in the middle of the night to get more ice for his severed finger (after the first bucket of ice had melted) but became trapped after the power went out. The four use Chow's speedboat, the keys for which were in Teddy's pocket, to travel back to the wedding reception.
Arriving on land just as Lauren's father is about to cancel the wedding, Stu makes a defiant speech where he rejects being boring and instead states that he is in fact quite wild. Impressed, Lauren's father gives the couple his blessing. After the wedding continues on, Alan presents Stu with a special gift at the post-reception dance: a musical guest performance by Mike Tyson. Teddy later discovers that he had taken many pictures during the night on his cell phone. The group, along with Tyson, agree to look at the pictures together once (some of which reveal Teddy lost his finger playing the knife game) before erasing the evidence of their exploits once again.
Third Adventure (Los Angeles)Edit
Two years after the events in Bangkok, Leslie Chow (Ken Jeong) escapes from a maximum security prison, using a riot as cover. Meanwhile in America, Alan Garner (Zach Galifianakis) causes a 20-car freeway pileup after he purchases a giraffe and accidentally decapitates it on a low bridge. Alan's father Sid (Jeffery Tambor), furious with Alan for never owning up to his mistakes, dies of a heart attack in the middle of a lecture. After the funeral, Alan's brother-in-law Doug Billings (Justin Bartha) informs friends Phil Wenneck (Bradley Cooper) and Stu Price (Ed Helms) that Alan has been off his ADHD medication and is out of control. They attend an intervention, in which Alan agrees to visit a rehab facility in Arizona, so long as "the Wolfpack" takes him there. On the way to Arizona, Phil's minivan is rammed off the road by a rental truck and the group is taken hostage. They are later confronted by crime lord Marshall (John Goodman) and "Black Doug" (Mike Epps), his head of security.
He tells them that Chow hijacked half of a $42 million gold heist and, seeing how Alan has been the only one to communicate with Chow during his imprisonment, deduced that the Wolfpack could locate him and retrieve the gold. Marshall kidnaps Doug as collateral and gives the others three days to find Chow, or else Doug will be killed. Alan sets up a meeting with Chow in Tijuana, Mexico, where Stu and Phil will hide and attempt to drug him. However, Alan gives away their location and he forces them to confess they are working for Marshall. Chow explains his plan to retrieve the stolen gold from the basement of a Mexican villa he previously owned. Stu, Alan and Phil break into the house and successfully retrieve the gold, but Chow double-crosses them by locking them in the basement, rearming the security system and escaping in Phil's minivan. They are arrested but mysteriously released from the police station, where they are picked up by a limousine and taken back to the villa, where they meet up with Marshall.
They learn that Chow had lied to them; the villa was never his. In fact, it was Marshall's own villa and the gold they stole was the other half he didn't get from Marshall. Marshall forgives them for their mistake but kills "Black Doug" for his incompetence and reminds them of their now two-day deadline. The group tracks Phil's phone, which was left in the minivan, outside a pawn shop in Las Vegas. The pawnshop owner, Cassie (Melissa McCarthy), tells them that Chow traded a gold brick for $18,000, far less than its usual sell rate of $400,000. Using Stu's former lover Jade (Heather Graham) as their contact, they learn that Chow is barricaded in the penthouse suite of Caesars Palace. Phil and Alan sneak into his suite from the roof, but Chow escapes, jumping from the balcony and parachuting down to the strip. Stu catches up to Chow and locks him in the trunk of the limo that Marshall had lent to them. They take the gold and meet with Marshall, who releases Doug back to the group. Although Marshall initially promised to not harm Chow, he changes his mind and shoots through the trunk of the car, presumably killing him. Luckily, Alan had freed Chow through a backseat compartment just moments earlier.
Chow emerges from the limo and kills Marshall, allowing the Wolfpack to live because Alan had saved his life. He offers Alan a bar of gold as a gift, but Alan turns him down, and ends their friendship due to Chow's unhealthy influence on the group. As Chow sadly watches them leave, they go to retrieve Phil's minivan from the pawnshop and Alan makes a date with Cassie. Six months later, the two marry. Vowing to begin taking responsibility for his actions, Alan regretfully resigns from the Wolfpack, but would still like for the gang to hang out on occasion. As the four walk to the ceremony, a montage of clips from the previous films play, thus ending the trilogy. In a post-credits scene taking place the morning after the wedding, Alan, Cassie and Phil appear to have staged another wild party that they cannot remember. Stu emerges from the bathroom with breast implants and Alan remembers that the wedding cake was a gift from Chow, who emerges from the next room naked, laughing and wielding a Katana.
- Chow is the only member who partied with the rest but never got drugged and blacked out.