Intern Dr Ki Heehyun meets a patient, Jung Chaeyeon, who is suffering from a recurrance of childhood leukaemia. Though Heehyun knows that she shouldn't fall in love with a patient, she does anyways. 

Inspired by Dia's song, To You (Road) composed by Jueun, from their 6th mini-album, Flower 4 Seasons.  Jueun asks you out and you've agreed. You two spend a wonderful time at the park, admiring the blooming cherry blossoms while walking on the road.