It was Christmas. Three friends - a newspaperman, a bass man and a lawyer - gathered for a visit. Having bought gifts, they rushed to the platform. There were no seats on the train. In first class they were lucky - a lady was sitting alone in the compartment. But she did not let them into the compartment. Her friends decided to play a joke on her and took her to the gendarme to find out whether the things in the compartment were hers or not...