After her fake life experience was exposed, Asami Sae (Nao Matsushita) fell from the altar of a perfect lady and was isolated by other wives in the Sky City.The eldest daughter Ruri (Miwa Arai), who has been raised with dedication and care, also hates her and only trusts the outstanding tutor Ayaka Kujo (Koyuki). Kujo tells Ruri not to treat Saei like a mother but to treat her like a maid.That's it, Saying even lost the meaning of her existence as a mother.

On the other hand, Nikaidou Kyoko (Higa Aimi), who once had a dispute with Sae because of Kujo, began to doubt Kujo because the mock exam practice questions she gave Ruri had an extraordinary hit rate.Kyoko, who was feeling uneasy, decided to investigate Kujo's true identity together with Izumi Minami (Fumino Kimura) and Misaki Natsume (Marijun Takahashi), who were also candidates' mothers.Then, shocking new facts emerge...!

At the same time, an incident occurred in Asami's family that accelerated the collapse of the family.Not only that... this incident became the trigger. Saying learned that the poor student Yamada Miku (Tana Mukong) living at home was the biological daughter of her husband Hideyo (Tanabe Seiichi).