After reading Young Jae’s diary, Suh Jin confronts Coach Kim with Myung Joo’s suicide. Knowing Coach Kim’s involvement Suh Jin fires her as Yeh Suh’s coach, but now she must find a new coach for Yeh Suh. The newest mother in Sky Castle, Lee Sue Lim, isn’t like other mothers in the neighbourhood. She doesn’t fit in with the other mothers. Her unconventional behaviours cause Suh Jin to resent Sue Lim, but Sue Lim knows of Suh Jin’s shameful past.