[AU] Ji Hoo and Jan Di's relationship never had the chance to flourish after he left for Paris. But what if Ji Hoo never followed Seo Hyun to Paris? Or, what if he let go of Seo Hyun a bit sooner? Would his relationship with Jan Di have progressed to one of more than just friends? Would their love have gone smoothly? Or, would Jan Di have suffered, just as with Jun Pyo?

Jan Di and Ji Hoo are in medical school together. Joon Pyo is in America. Jan Di and Joon Pyo struggle with a long-distance relationship. Jan Di and Ji Hoo become closer as they share their passion for medicine and Ji Hoo continues to answer the emergency bell. Takes place during 4 year gap in BoF and continues. Will life go as expected? Will new romance blossom?