"Don't cry, I wasn't attacked. In fact, I was the one who got attacked. " Lee Jeong-yeon, a deputy PR team member at a large corporation, plans to confess to her boss, Gong Ji- hyeok, whom she's had a crush on for six years, on Christmas, but discovers he has someone else in mind. Struggling with frustration, she impulsively meets an online friend and, drunk in an instant, finds herself in danger of being attacked in a hotel room. She desperately cries out for help, but is immediately hit in the head and passes out. She thought it was the end, but what happened? When she came to, she was lying next to Ji-hyeok in his bed...