Lee Kang Hoon (Sung Hoon) is the CEO of D.O.L., the world’s largest Korean subsidiary. One day, he is kidnapped and escapes from the villains, but he’s bleeding so badly that he collapses in front of an animal hospital. Yoon Seo, a veterinarian, finds him and treats him. Lee Kang Hoon is a handsome, wealthy heir who cares little about other people’s feelings, while Cha Yoon Seo is a cheerful and likable veterinarian. Can the mutual dislike they feel for each other turn into love?