"This time, there's no wedding. No bachelor party. What could go wrong, right? But when the Wolfpack hits the road, all bets are off," said a synopsis released by the studio Monday.
"The Hangover Part III" reunites Bradley Cooper, Ed Helms, Zach Galifianakis and Justin Bartha as Phil, Stu, Alan and Doug.
Phillips is directing the sequel from a screenplay he wrote with Craig Mazin, with whom he collaborated on the screenplay for "The Hangover Part II." The final installment is scheduled for release May 24.