Kim Yoon is a perfectly handsome, perfectly successful branch manager. Little can faze him, whether it’s his struggling team or his irked blind date partners. Yet his new secretary, Yang Seoyu, who seems somehow immune to his perfection, can’t help but pique his curiosity. Yoon is determined to break through Seoyu’s cold heart, but she is dead set on keeping their relationship professional. Which will overcome the other in the end—Yoon’s determination or Seoyu’s poker face?