Nam Jae-sung had been Anna's direct superior for several years. To him, Anna was a bright beautiful girl who always did her work well. He secretly liked her but didn't dare to confess his feelings since he was supposed to be her boss.
One day, Jae-sung suddenly had the opportunity to take Anna home since she got drunk. They had attended a meeting with the higher-ups. But after that, they were invited to a meal and then to have drinks, and one kept making Anna drink probably to bed her after. But Jae-sung would never allow that.
While their superior who kept making Anna drink went to the comfort room, Jae-sung took the opportunity to excuse himself and Anna. But he, himself was already tipsy so he brought Anna to a hotel.
He thought he could control himself but when he was alone with Anna in a hotel room, his urges took the best of him and Anna responded so they ended up doing it.