Its hard to believe, but this heist/comedy, directed by Jared Hess (Napoleon Dynamite) is based on true events of the largest cash robbery in history.
David Ghantt (Zach Galifianakis) is an armored car driver for Loomis Fargo in 1997 North Carolina. He's a nice guy with a full beard, a long bob hairdo and a paunch that his goofy fiancee (Kate McKinnon) tries to shame him into trimming down. He has a flirty relationship with co-worker, Kelly Campbell (Kristen Wiig) and when she is fired for being a lousy employee, he still thinks about her.
Once unemployed, Kelly starts hanging out with a questionable crowd, headed by Steve Chambers (Owen Wilson). After watching news of a robbery,on TV, Chambers questions her about a possible heist with someone she had worked with. She tells him that David has a key to the vault, and a haphazard plan is quickly devised where David would take all the risk and they would get all of the loot.
Kelly bats her eyes a few times, and David quickly signs on. She tells him that after the deed is done, he will go to Mexico and the rest of the gang will keep the money until the heat is off. She also sweetens the pot by saying that she will join him and the two will live together in Rio. He falls for it hook, line and sinker. He's so trusting of Kelly, that even though he never actually sees Steve's face nor knows his real name, he happily goes off to steal the loot.
David parks his armor vehicle in the garage and fills the back with as much cash as it will hold. The scene is filled with pratfalls, mistakes and silliness. Even so, he ends up with $17 million in cash.
Kelly sends him off to Mexico to await her joining him. She straps cash under his clothes so its bulging everywhere and sets him up with a ridiculous disguise. He leaves with $20,000 while Chambers and his family spend lavishly and Kelly strings him along when he calls her on a payphone to check on her joining him.
Each character is more outrageous than the next. Jason Sudeikis is funny as a sadistic hit-man, and Galifianakis is so over-the-top, whenever he's on screen, I laughed. Besides the novelty of such an unbelievable story, the whole thing worked for me because David is such a nice, innocent guy that got in way over his head.