An elderly father, whose forgetfulness progresses to the point where he eventually causes an indecent incident outdoors. His daughter, Yuika, pained by his condition, volunteers to take care of him. However, the father forgets even Yuika's existence and, driven by his uncontrollable desires, attempts to embrace his daughter... "If I don't accept this, someone else might get hurt..." Despite her confusion, Yuika decides to accept her father's actions. However, this devotion under the guise of 'caregiving' eventually awakens forbidden emotions within Yuika...