Uchuu dorei kan amado niku dorei onna fune

A female crew is working on a supply mission together with her boyfriend. Received a sudden proposal of marriage, her happiness is larger than ever, when she is kidnapped by an enemy battleship. Surprisingly the captain of the battleship asks her to marry him, too. She refuses him, and in return the captain coerces her to be a sex slave to spare the life of her boyfriend. Now she has to experience various humiliations...