Shinjo Masamune (Takumi Saito), a mischievous yet good-natured kidnapper, kidnaps Nanase Rin (Yuno Nagao), the daughter of a wealthy hospital director. However, it turns out that Rin is a brilliant genius girl who has lost her memory! Furthermore, Rin's parents are murdered by someone, and Shinjo is pursued as a murder suspect... The two, now "in the same boat," embark on an unusual escape journey...