Kang Hye Na is the sole heiress to the nation's most wealthy conglomerate, and she has everything, even sassiness. One day, Seo Dong Chan gets hit by Hye Na's car, but since Hye Na refuses to apologize, Dong Chan persistently follows her around. Seeing how Dong Chan does not fear Hye Na, Hye Na's grandfather hires Dong Chan as a new butler and puts him beside her. Different from their first intentions, they get closer and unexpectedly fall in love. Unfortunately, no one approves of their love, but the two carry on and keep loving each other.