At the age of 28, Woo Seunghyun finally abandons all hope and feelings for his first love, Na Yusung, and decides to take life seriously. Having followed Yusung into college, Seunghyun is a little unsure of what he truly wants. Thanks to a friend, he lands an internship at the company AD's Planning Team 1, led by the infamous Kim Jongchan. Though he is quite fair, Seunghyun's new boss is a workaholic who is a stickler for the rules. Corporate life is tough, but Jongchan seems to recognize Seunghyun's potential. However, to add to Seunghyun's interning troubles, Yusung happens to work at the same company—and is close to Jongchan. Seunghyun swears off complicated office romance, but Jongchan's good looks and sweet kindness quickly begin to test that resolve. [Written by MAL Rewrite]