Dusang, who suffers from prosopagnosia, comes up to Seoul to look for his first love Saem. Three different women come across his path soon after he arrives. To him, they all appear to be Saem.
| Actor | Role |
|---|---|
 Choi Jun-youngDu-sang | Du-sang |
 Ryu AbelWoman | Woman |
 Jo Jae-youngBan Seong-joong | Ban Seong-joong |
 Kim Yoo-dongMan in couple | Man in couple |
 Lee Ae-riFirst woman in a couple | First woman in a couple |
 Kim Se-onSecond woman in a couple | Second woman in a couple |