Hari ends up having one drink too many at the company dinner and wakes up the next morning with no memory of the previous night...except for a lingering sensation on her lips! Just what could have happened? She finds out in the worst way possible when she runs into Taemu at the office, because he remembers every single detail...Meanwhile, Yeongsuh also wakes up from a night of heavy drinking, but unlike her best friend, she instantly realizes that something went very, very wrong...