During a crossing, Professor Rabas, a famous tamer, meets a certain Raymonde whom he brings back with him to his circus. The presence of the young woman leads to disagreement between Rabas and his younger brother, Léo; she suggests to the latter to enter the cage of the untamed lions, where he is injured. Rabas and Leo understood the lesson; Raymonde is hunted like an evil beast, and calm returns to the circus.