Na Na meets her ex-best friend turned boss, Roo Mi, at XX where she's working as a head bartender. She remembers how her ex-boyfriend she was seeing five years ago cheated on her with Roo Mi. Roo Mi is unapologetic and Na Na is still not over her past.

Na Na meets her ex-best friend turned boss, Roo Mi, at XX where she's working as a head bartender. She remembers how her ex-boyfriend she was seeing five years ago cheated on her with Roo Mi. Roo Mi is unapologetic and Na Na is still not over her past.

Due to her past, Na Na is hypersensitive about cheaters. After witnessing an affair, she posts on a website what the two, who work at Revan company, did at the bar. However, she hasn't decided whether or not she'll tell Roo Mi what she saw. Roo Mi suspects that there's something going on between Gyu Min and Jang Mi.

Due to her past, Na Na is hypersensitive about cheaters. After witnessing an affair, she posts on a website what the two, who work at Revan company, did at the bar. However, she hasn't decided whether or not she'll tell Roo Mi what she saw. Roo Mi suspects that there's something going on between Gyu Min and Jang Mi.

To celebrate them earning the chance to place an event at XX, they go out for staff dinner. Na Na purposely calls Jung Deun there and also makes Roo Mi to bring her boyfriend. Staff dinner becomes a confrontation where Na Na and Jung Deun tells Roo Mi in front of Gyu Min that they saw him with another woman.