Tiffany's a successful businesswoman; she has a massive amount of wealth, prestige, and power. She's married to Taeyeon, the daughter of the most prominent businessman in South Korea. Everything in life has been handed to both on a silver platter by the universe. They have everything, except there's one thing missing from that perfect world for Tiffany; her mistress, Jessica. The only woman she'd sacrifice all that for. 

Tiffany has been invited to a party by her ex-boyfriend, Nichkhun. She intends to bring Jessica, who she convinced to be in a fake relationship with her. Unfortunately, she's the complete opposite of what Tiffany's looking for.