Hiroyuki, the son of a wealthy family, is attending the same university as his childhood friend Waka, the daughter of a wealthy family, and they are currently living together. While still a student, Hiroyuki has taken over one of the companies run by his father, and has promised to marry Waka when he graduates. The two, who are in an enviable situation, were guaranteed a happy Mirai. One day, some people who have a grudge against Hiroyuki attack his house while he is away and kidnap Waka...