Zac Efron has had an interesting go of it, starting with his days as a Disney heartthrob in theHigh School Musicalseries to proving he had a set of nasty comedy chops in theNeighborsfilm series alongside Seth Rogen and Rose Byrne. Now he’s putting them to use again in a comedy based on the real-life story of a man making the most dangerous beer run in history.

ThePeter Farrelly film, based on the book of the same name, features Efron as real life former marine-turned-merchant mariner, John “Chickie” Donahue. It opens on Donahue in a dugout with a soldier asking him if he’s ready. Ready for what? Running. As they run through a hail of gunfire, titles are superimposed: A REAL GUY ACTUALLY DID THIS. They dive down behind some sandbags the soldier says, “We’re halfway home.” Chickie pauses—“Halfway?!?” He then begins narrating the backstory over a shot of his character waking up in a twin bedin New York: “I’m ‘Chickie’ Donahue and I’m not supposed to be in Vietnam.”

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After scenes of protesters, “Chickie” Donahue is seen drinking in a neighborhood dive bar where the bartender, played by Bill Murray, says that the soldiers over there can see that lack of support on TV and that he wishes he could bring each of them a beer. Donahue says he could do that. His friend says he’s drunk and the bartender responds, “The man’s stone sober. That’s his fifth beer, maybe. Tops.” Donahue then stands up and shouts, “I’m going to Vietnam…and I’m bringin’ them beer!” His friends alternately cheer him on or facepalm.

Filling a duffel bag full of Pabst, he takes off for Vietnam aboard a cargo ship. Once in country he meets up with a war photographerplayed by Russell Crowewho tells him, “Smuggling beer into a warzone? That’s not the smartest thing I’ve ever heard of. It’s certainly not the worst, either.” They figure out a logistical route that will trace a major river and the expedition begins. It starts out all fun and games but Donahue realizes all too quickly thatVietnam is far moreApocalypse Nowthan it isn’t. Crowe insists he be a witness so he can tell folks what’s really going on back home. The film ends with a montage of Donahue handing out beers and taking off in a chopper.

The true story thatThe Greatest Beer Run Everis based on is pretty spectacular, and could make for a fun movie. A short documentary about the real Chickie is available to watch onthe Pabst Blue Ribbon YouTube channel, and is definitely worth checking out if only to understand the basis for this upcoming movie.

The Greatest Beer Run Everis in theaters and streaming September 30th, 2022.