It's New Year's Day. Antoine Garnier has decided to invite all his family and friends to dinner at his house the day after New Year's Eve. But the family being large, he is going to be overwhelmed since no less than 35 guests are expected.
Fred, a raffish safe blower, takes refuge in the Paris Metro after being chased by the henchmen of a shady businessman from whom he has just stolen some documents. While hiding out in the back rooms and conduits of the Metro, Fred encounters a subterranean society of eccentric characters and petty criminals.
