Takeshi and his mother, Kiriko, come to a hot spring resort to rescue their mother, who is suffering from her husband's domestic violence. The innkeeper and the manager look a little suspicious at the guests, who are so much older than Takeshi... However, Kiriko, who is at peace in both Kokoro and body after her first rest in a long time, doesn't seem to mind and relax. One day, the innkeeper realizes that the two are mother and son, and that a forbidden love is growing between them. She then devises a plan to bring them closer together...