There is only half a year left for Fuutarou and the quintuplets in their high school life, and the final summer vacation is about to begin. In order to concentrate on studying for the exam, Fuutarou tells the quintuplets not to work as tutors during the summer vacation. The quintuplets are sad because they can't see Fuutarou for the time being, but suddenly they receive a call from Fuutarou...