Hyun Joong disappears without a trace, and members of the gym are determined to guard the gym until he comes back. Mi Ran tirelessly searches every place Hyun Joong might have gone. Amid the collective effort to save the gym, Ro Sa hears something utterly devastating. Meanwhile, Ji Ran is having a hard time getting over Dan.

Hyun Joong and Mi Ran begin a secret romance. Hyun Joong expresses his love in his own quirky way, and Mi Ran starts to find his oddness endearing. With the gym building falling apart and water leaking everywhere, Hyun Joong faces pressure as the landlord shrugs off responsibility and tells him to deal with it or move out.