Whether it was alcohol or weakness, Sang-shik and Na-rae kissed irrationally. But after the kiss, Sang-shik sent the worst text message, saying "I'm sorry" and goes on a blind date! Na-rae finds out the truth and gets angry. Meanwhile, at the office... there's a spy among us! Ma-tan senses that someone from the team is stealing information for Chairman Baek Jo-won. While observing them, he accidentally hears Kang-mi's phone call... Is Kang-mi, whom he trusted, a spy?
