Tanabe Yuuka leads a peaceful life as a devoted housewife, cherishing the happy family she built with her husband after their school days. One ordinary afternoon, while awaiting his return from work, an unexpected visitor arrives at their apartment, shattering the tranquility she has always known. The aftermath of this intrusion marks a turning point, thrusting her into a world of turmoil and uncertainty. As she reflects on the events that have unfolded, Yuuka grapples with the loss of her once serene existence.