Theresa feels neglected. When her husband Richard once again cancels an appointment on her birthday, she travels to Usedom for a spontaneous solo vacation. She receives a tempting job offer at the "Möwe" guesthouse, which is all the more attractive because the charming boat builder Sebastian entertains the guests with piano music in the evenings. When Richard finally sets off for Usedom to bring his wife back home, he is up against some serious competition.