A young, idealist American gets a job as a train conductor for the Zentropa railway network in postwar, US-occupied Frankfurt. As various people try to take advantage of him, he soon finds his position politically sensitive, and gets caught up in a whirlpool of conspiracies and Nazi sympathisers.
JAM (Christian Clavier), a French "master of the universe" is on the brink of a major takeover when he starts suffering from anxiety attacks. His doctor (Lhermite) thinks it is to do with childhood experiences and suggests he searches back in his mind to something that could be the trigger and will prove to be the antidote.
A man, Milan steps off a train, into a small French village. As he waits for the day when he will rob the town bank, he runs into an old retired poetry teacher named M. Manesquier. The two men strike up a strange friendship and explore the road not taken, each wanting to live the other's life.
