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, um ladrão de cofres, se refugia no metrô de Paris depois de ser perseguido pelos capangas de um homem de negócios a quem acaba de roubar alguns documentos. Enquanto se esconde nas condutas do metrô, ele encontra uma sociedade subterrânea de personagens excêntricos e pequenos criminosos…
