EXCLUSIVE: Zac Efron and Robert De Niro are getting more company in their Lionsgate road trip pic Dirty Grandpa. Parks and Recreation’s Aubrey Plaza has signed onto the comedy about an uptight twenty-something (Efron) who embarks on a road trip before his wedding to bond with his recently widowed grandfather (De Niro) only to find that his grandpa is a foul-mouthed lunatic on a mission to get laid during Spring Break.

Plaza will play Lenore, a savvy, beguiling party girl looking for fun on Spring Break.

Dan Mazer (Da Ali G Show) is directing from a screenplay by John Phillips, while Bill Block, Jason Barrett, Barry Josephson and Michael Simkin are producing. Zoey Deutch joined the cast last month and Dermot Mulroney also stars. Lionsgate has already set an August 12, 2016 release for the QED and Ninjas Running Wild comedy. Erik Feig and Jim Miller are overseeing for the studio.

Plaza returns this month to drop more deadpan one-liners as April Ludgate on the seventh and final season of Parks and Recreation. Her big screen credits include the acclaimed Sundance sci-fier Safety Not Guaranteed, The To Do List, Scott Pilgrim vs. The World, Funny People, and Damsels In Distress. She next appears in Hal Hartley’s Ned Rifle and in A Driftless Area with John Hawkes. She also stars with Natasha Lyonne and Judy Greer in Jamie Babbit’s indie comedy Fresno.

Plaza is repped by CAA, The Schiff Co., and Ira Schreck.