A romantic comedy about Joo In-ah, a charismatic audit department head with a secret, and Noh Ki-joon, the department's ace who is suddenly demoted to deal with the company's scandals.

A skilled hacker steals a massive 2 trillion won slush fund to escape danger, triggering a high-stakes game of deception and power. True motives behind the slush fund emerge, leaving everyone vulnerable while the "Daesan Man" ultimate goal is to entirely consume Daesan Group.