The father of Kang Min Ho (Jung Kyung Ho) ran a large company, but his death led to his uncle taking over the company. Min Ho grows into a cut-throat investor seeking for revenge. He's diagnosed with heart disease and is only given a little time to live. Because of a miracle, he gets a heart transplant that saves his life but his personality changes after the surgery.
Min Ho who used to be cold-hearted begins to have warm feelings and he falls in love with a woman named Kim Soon Jung (Kim So Yun) who is his uncle's secretary. He then realizes the true meaning of love and happiness. Lee Joon Hee (Yoon Hyun Min) is Soon Jung's childhood friend who will form a love triangle with the leads.