“Did you see that guy again? I mean that skinny idiot who sticks to you like a parasite.”
Ju-han, So-eun’s first love, is now an executive director at Seohan, one of the largest corporations in South Korea. But he hides a secret: he suffers from Dissociative Identity Disorder, and his daytime and nighttime personalities are completely different from each other.
At the request of Tae-geon, Seohan’s chairman and a close friend of her father, So-eun becomes the personal physician for the Seohan family. One day, she comes face to face with Ju-han’s other personality.
“Just call me Ju-han. Hold my hand… you don’t have to do anything else, okay?”
Unlike the cold and sharp Ju-han she knows during the day, the Ju-han who appears at night looks at her with gentle, vulnerable eyes and leans on her like a lost puppy.
Even though they are the same person, So-eun finds herself unable to keep her heart from wavering between the Ju-han of the day and the Ju-han of the night.