Fuutarou, a part-time tutor, successfully guided five beautiful quintuplets (who were on the verge of failing and hated studying) all the way to graduation. The quintuplets went their separate ways and achieved their dreams, but one of them seems to be troubled by something... Meanwhile, Fuutarou and the quintuplets plan a honeymoon trip to Hawaii. Just as preparations were progressing smoothly a certain incident comes to light, causing a huge commotion!! And then, even in Hawaii, their travel destination, they get caught up in trouble...!? (Source: Official Site)