On his birthday, Yvon accidentally swaps his accountant's briefcase for a stranger's on the commuter train—and discovers millions inside.
He immediately decides to fly to Buenos Aires, Argentina, to start a new life in the sun.
But he hasn't reckoned with his wife's stubborn refusal, the constant intrusions of an ill-timed couple of friends, a shady cop, a nitpicking police inspector, and an irascible taxi driver—not to mention the arrival of a killer determined to reclaim what is rightfully his…