Kim Minseok is a black hearted CEO of the biggest bank in Seoul and Kim Jongdae is his new curious employee. Being black hearted person is not easy for Minseok.He does not believe in true love,'until-the-rest-of-our-lives' happiness and colors are the thing he finds quite irritating.All of his dislikes make him really distant from the whole society and even his closest people. He needs someone special to bring him back the faith in love and happiness,someone to show him how actually pretty colors are and how they are important in making the world more interesting and beautiful place. Will Kim Jongdae,one of his best workers in the bank,be that special someone?