Wataru lives with his wife and her mother and leads a happy family life.In fact, he has been fascinated by the bewitching sex appeal of his mother-in-law's cape for a long time, and Wataru has hidden his inferiority towards him.However, one day, when the two of them were alone, their morals suddenly broke down and attacked Misaki.Misaki, who has endured the pain in her body for a long time since the death of her husband, is also unable to strongly refuse.And the two of them will drown in a super thrilling immoral night where their family will collapse immediately if they find out...