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.
- Genre: Comedy
- Studio: Laurence Mark Productions, CBS Films, Outlaw Sinema, Good Universe, Gidden Media, Mandate International
- Keyword: california, casino, new jersey, drag queen, florida, sarcasm, married couple, male friendship, grandfather, stag night, malibu, las vegas, older man younger woman relationship, divorced, widower, brooklyn, new york city, group of friends, childhood friends, military veteran, elderly, cirque du soleil, bachelor party, secret plan, new york, lounge singer, lifelong friends, what happens in vegas stays in vegas
- Cast: Robert De Niro, Morgan Freeman, Michael Douglas, Kevin Kline, Mary Steenburgen, Jerry Ferrara