A powerful, dynamite body struts before his eyes, revealing nowhere to hide... Takeshi is perplexed by this extremely unusual situation. His mother-in-law Ryoko, who he contacted in search of his wife who ran away from home, rushes over to his house, but Takeshi never expected that Ryoko would spend her time almost completely naked after a bath. Right before his eyes is a defenseless naked woman, far too erotic to be called a mother. His wife is not there. This unexpected opportunity shakes Takeshi's reason greatly...