After discovering that his wife Mai (Misato Ugaki) is pregnant, Yosuke (Hiroki Iijima) tries to break off the relationship with Yura (Mirai Tanaka) who gets in his way.When she got home, Yura, who came in with a duplicate key, was waiting for her... When Yura learned that she was pregnant, she was very angry and left, saying: Leave it to me.%

There is a past that no one knows about between Yura and Yosuke.Mai consults her classmate, lawyer Matsunaga (Horii Arata), who tells her something she didn't expect.Yosuke's father Hirofumi (played by Kenya Ohsumi) suggested that she separate from Yosuke, but Mai's determination remains firm.​

On the other hand, Yura, who was worried that Yosuke's relationship was drifting away, conspired with his servant Kudo (Hideto Mori) to tell lies and took crazy actions!