Têtu et dôté d'un fort tempérament, Louie de Palma tente de diriger une compagnie de taxis new-yorkaise, composée de chauffeurs plus originaux les uns que les autres...
Jim befriends a runaway child, who has stowed away in Tony's cab, and soon has ""adopted"" him. When the gang gets wind of this, they find the kid's parents and reunite them.