Doctor Yoo Youngjae works in the psych ward. Choi Junhong is a patient with a split personality. Doctor meet patient, Patient meet doctor.  Let the mind games begin.

We built walls around our hearts & lock all our doors, and yet we wonder Why nobody ever saves us.                                                                 

Jessica spent her life making paper planes, waiting, and holding onto a vague promise for as long as she remembered. The thing is, she was not even sure what she was waiting for.