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Doug (Justin Bartha) is about to be
married to Tracy (Sasha Barrese). His friends — Phil (Bradley Cooper), Stu
(Ed Helms), and soon-to-be brother-in-law Alan (Zach Galifianakis) — take
him to Las Vegas for a bachelor party. Tracy's father (Jeffrey Tambor)
lends them his car, a vintage Mercedes convertible, for the trip. The four
get a villa at Caesars Palace hotel and casino, then sneak onto the roof
and toast to the night ahead. The next morning, the three groomsmen wake
up in the suite with no memory of the previous night and soon realize that
Doug is missing. Clues abound: the suite is in severe disorder, a tiger is
in the bathroom, a baby is in the closet, Stu is missing a tooth and has
an ATM receipt for $800, one of the suite's mattresses is impaled on a
statue outside, Phil is wearing a hospital bracelet, and a valet brings
them a stolen police cruiser they dropped off the night before.
While retracing their steps, a doctor at the hospital informs them that
they had traces of roofies in their blood, explaining their memory loss,
and that they came from a wedding. They find the chapel, and learn that
Stu, despite planning to propose to his controlling girlfriend Melissa
(Rachael Harris), married an escort named Jade (Heather Graham), who turns
out to be the mother of the baby in the closet. In the parking lot, they
escape an attack by two Asian gangsters who beat on the police car yelling
"Where is he?". Confused, the men visit Jade's apartment and return the
baby, but are taken by surprise by the police, the cruiser's original
owners, who arrest them for stealing their ride. Phil negotiates their
release in exchange for the three groomsmen "volunteering" as targets for
a humiliating taser demonstration. They then retrieve the Mercedes, which
is miraculously unharmed, from an impound lot and discover a naked Asian
man (Ken Jeong) in the trunk. The man attacks them with a crowbar and runs
away, and Alan admits to spiking their drinks the night before with what
he thought was ecstasy, but realizes the drug dealer must have sold him
roofies instead. They return to the hotel and find former boxing champion
Mike Tyson (who portrays a fictionalized version of himself) in their
room, looking for his stolen tiger. Tyson knocks out Alan and orders them
to return the pet to his mansion. They drug the tiger with roofies and
transport it in the Mercedes, but before they reach Tyson's mansion, it
wakes up and destroys the car's interior, forcing them to get out and push
the car the rest of the way. After the tiger is returned, Tyson plays
security footage of the groomsmen's activities from the night before in an
effort to help them locate Doug.
Resuming their search, the three are confronted by the thugs, who, as it
turns out, are led by the naked man they found in the trunk of their car,
an Asian gangster named Leslie Chow. According to Chow, the groomsmen have
$80,000 of his money, which they accidentally took the night before. Chow
demands it back in exchange for Doug, whom he has kidnapped. Unable to
find the money, Alan uses his knowledge of card counting to win it playing
blackjack. The money is repaid, but Chow had kidnapped a different man
named Doug, who turns out to be the drug dealer who sold Alan the roofies.
After a conversation with the Doug the drug dealer, Stu remembers that
hotel windows do not open in Las Vegas, and therefore the mattress on the
statue must have been thrown from the roof, where they had likely locked a
sleeping Doug as a prank. Rushing back to the roof, they find him, weary
and severely sunburned from being stuck there for a day and a half, with
less than four hours before the wedding. Before leaving, Stu meets with
Jade and the pair agree that they cannot remain married, but promise to
meet the following weekend to see what develops between them. Jade also
reveals that Stu had pulled out his own tooth on a bet from Alan
declaring, "I bet Stu isn't a good enough dentist that he could pull his
own tooth out". As they rush home and make it to the wedding, Doug reveals
that he found Chow's $80,000 worth of casino chips in a bag on the roof.
Doug marries Tracy, Phil happily returns to his wife and son, and Stu
proudly breaks up with Melissa. As the reception ends, Alan reveals Stu's
digital camera he discovered in the back seat of the Mercedes chronicling
the events they were unable to remember, and the four agree to look at the
pictures only once before erasing the evidence.
As the credits roll, the pictures from the camera are shown. |
