Na-na meets her former best friend turned boss, Roo-mi, at XX, where she works as a head bartender; she remembers her ex-boyfriend's betrayal with Roo-mi five years ago, while Roo-mi remains unapologetic and Na-na struggles to move past her hurt.

Na-na, sensitive about cheaters due to her past, posts on a website about an affair she witnessed between two Revan company employees at a bar; she hasn't decided whether to tell Roo-mi what she saw.

To celebrate their chance to host an event at XX, they go out for staff dinner; Na-na purposely invites Jung-deun and makes Roo-mi bring her boyfriend.

In the recovered footage, Roo-mi hears Gyu-min's thoughts about her and decides to recover the missing footage; Dan-hee and Na-na spend time at a pub, where Na-na sees a different side of Dan-hee that makes her heart flutter.

Na-na faces her past and answers Danny's question, while Roo-mi finds what she sought in a man and talks to her dad; their pasts collide as Jung-deun gets what he wants.