'Last Vegas' Trailer: Morgan Freeman, Robert De Niro Plan Their Own 'Hangover' (Video)

Morgan Freeman Michael Douglas Robert DeNiro Las Vegas - H 2013

The Las Vegas bachelor party ensemble comedy is set to be released November 1.

What if The Hangover starred Morgan Freeman, Robert De Niro, Michael Douglas and Kevin Kline?

That's the simple yet irresistible premise of Last Vegas, an ensemble comedy gathering the stars together as friends heading to Sin City for a bachelor party.

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The first official trailer opens with Douglas' character calling up the gang with news that he's to be married and promises them a trouble-filled weekend in Vegas. 

Late-night escapades that would be familiar to the Wolf Pack's Bradley Cooper and Zach Galifianakis ensue -- including Freeman delivering an inebriated monologue at a club. 

The film, directed by Jon Turteltaub, is set for release on Nov. 1. 

Watch below: