Joo Wan returns to Korea after a 17 year absence to fulfill the promise he made to his former caretaker and first love, Shin Joo Yeon. However, the object of his affections has changed since their last meeting, and she does not recognize her former ward in musician of the moment, Allen Joo.
After defibrillating Chang Min into cardiac arrest, Jin Hee saves her ex with mouth-to-mouth resuscitation, but gets no respect.
Jin Hee gets humiliated, Chang Min acts like a selfish jerk, a bag of pee is emptied, and some doctor stuff happens.
A bitterly divorced couple clash in the emergency room where they’re both interning doctors. Will love blossom again? Or will it just get messy?