Aki Suo visits her daughter and son-in-law's home to mediate an argument between them, hoping to restore their relationship for the sake of her daughter's happiness and the prospect of her first grandchild. She earnestly tries to reconcile the couple, but the root of their marital problems lies in the son-in-law's intense feelings for Aki. That night, the son-in-law sneaks into Aki's bedroom, setting off a new chain of events. Hidden desires and emotional conflicts within the family unfold in depth.