What Happens in Vegas

All the couples are back for a wedding in Las Vegas, but plans for a romantic weekend go awry when their various misadventures get them into some compromising situations that threaten to derail the big event.

Aging pals Billy, Paddy, Archie, and Sam have been best friends since childhood. When Billy finally proposes to his much-younger girlfriend, all four friends go to Las Vegas to celebrate the end of Billy's longtime bachelorhood and relive their glory days. However, the four quickly realize that the intervening decades have changed Sin City and tested their friendship in ways they had not imagined.

Reuben Feffer is a guy who's spent his entire life playing it safe. Polly Prince is irresistible as a free-spirit who lives for the thrill of the moment. When these two comically mismatched souls collide, Reuben's world is turned upside down, as he makes an uproarious attempt to change his life from middle-of-the-road to totally-out-there.

Three days into his Miami honeymoon with needy and unsophisticated Lila, Lenny meets tall, blonde Kelly. This confirms his fear that he has made a serious mistake and he decides he wants to be with Kelly instead.

When a rich woman's ex-husband and a tabloid-type reporter turn up just before her planned remarriage, she begins to learn the truth about herself.

A runaway heiress makes a deal with the rogue reporter trailing her but the mismatched pair end up stuck with each other when their bus leaves them behind.

Poppy's a free spirit. Alex loves a plan. After years of summer vacations, these polar-opposite pals wonder if they could be a perfect romantic match.

Steve, a happily married American man living in London meets Vicki, an English divorcée and run off to Marbella for a rollicking week of sex. They then return to London to set up a cozy menage, despite the fact that he loves his wife and children, and now realize that he and Vicki have also fallen in love.

John and his buddy Jeremy are emotional criminals who know how to use a woman's hopes and dreams for their own carnal gain. Their modus operandi: crashing weddings. Normally, they meet guests who want to toast the romantic day with a random hook-up. But when John meets Claire, he discovers what true love – and heartache – feels like.