Madison Mintern is crossed in love. He goes to Europe. Muriel Leach, also crossed in love, and hating men, takes passage on the same boat. Trapper, a detective, also a passenger, is in search of a thief and absconder, Harry Green, who is supposed to be on the same steamer. Mintern' s description agrees with that of the absconder, and the fact that he keeps in his cabin and has most of his meals sent there, serves to confirm Trapper's suspicion that he is Green. He gets the cabin next to him and watches. One night Muriel and Mintern both seek the upper deck for solitude and are disgusted at each other. Muriel sprains her ankle and Mintern assists her. They become rather interested in each other. That night, when he is going to his stateroom, a storm switches off the electric current. Searching for his room, Mintern enters Muriel's cabin by mistake. The lights are suddenly turned on, she sees him and before he can explain, screams for help. Trapper, on the watch, arrests him as Harry Green. Luckily Mintern meets his friend, Mallory, on board, who vouches for his identity. He and Muriel become friends and resolve to help heal each other's broken hearts.