Kim Min Joo is a spirited single mother and successful producer who suffered a lot of pain in the past when she was cast aside by her ex-boyfriend, Kang Ki Hoon, and had since sworn off love.
Jung Do Hyung is the playboy president of the broadcasting company at which Min Joo works. He had an arranged marriage with Jang Jin Hee in the past, but they divorced soon after his near-fatal car accident in the U.S. He receives a heart transplant, after which he experiences strange changes in his habits, personal quirks and even finds himself falling for Min Joo. Against her better judgment, Min Joo also begins to fall in love with Do Hyung, and is confused at the growing similarity between him and her ex-boyfriend, Ki Hoon.
金敏珠是有能力的電視台製作人，但過去她的未婚夫啟勳一句話也沒說就離開她，當時敏珠發現已經懷了未婚夫的孩子，但她仍然生下孩子，自此不再相信愛情；電視台社長鄭道亨幾年前接受了心臟移植，之後他體驗一些奇怪的經驗，飲食習慣、講話語氣、喜好等都變了，見到未曾謀面的敏珠卻有似曾相識的好感，敏珠也在道亨身上看到啟勳的樣子，自然而然地愛上了他，後來她才知道前男友的心臟在道亨的心間跳動著，她和道亨之間命運般的愛情將如何展開….
