You're the first woman to treat me like this! Hyun Ji-won, the late-born youngest daughter of Haesung Group and the head of the strategic planning team at Haesung Electronics. A selfish woman who only knows herself falls for a straightforward new employee! Shin Yoon-soo, a new employee in the strategic planning team at Haesung Electronics. Yoon-soo, who has lived a model student life since childhood, has reaped the rewards of her efforts. A truly smooth-sailing life! But then comes the reckless team leader, Hyun Ji-won. “Why are you doing this to me?” Yoon-soo absolutely despises the parachute team leader Hyun Ji-won, who flaunts her wealth. “I can't sleep because of you.” Ji-won is so infatuated with Yoon-soo that she can't sleep at night. “Do I like you? Me? Hyun Ji-won?” When will the team leader's denial of her feelings for the new employee end? The team leader can't sleep again today.