After dating Ju-won for a year and a half without knowing he was the youngest son of the AL Group family, Yoon-seo decides to break up with him at his mother's request while accepting her money. As promised, she attempts to break up with him by making him gradually resent her. However, she gets drunk and unknowingly calls him to break up.

Now, as the AL CARD's director and Yoon-seo's superior, Ju-won declares war against Yoon-seo in an office he picked right next to hers. He vows he will never let her go and turns up his charms. He attacks her by flirting and clings to her in the most pitiful way. Meanwhile, Yoon-seo succumbs to his request to eat with him 27 times.