Seol-a’s boyfriend dumps her over text for a woman with better standing, and now they’re getting married.
Seung-hu Ji, the CEO, witnesses Seol-a berating her ex for it, but to her surprise, he reacts by taking her out to dinner after.
After a drunken night in bed, she finds out she was his first, but could he be her last?
Seol-a must now manage dating her company’s CEO and the blowback of Seung-hu spurning other women over her, one of whom is now dying to ruin Seol-a’s life.