Yun Jeong goes missing. Knowing her medical condition, Gyu Jin and Jae Seok frantically search for her. Na Hee and Da Hee stay by their side and help them look for her. Meanwhile, the police find footage of Yun Jeong getting on a bus, heading in the direction of their old neighborhood.
| Name | Type | Role | |
|---|---|---|---|
| Yang Hee-seung | Writer | ||
| Lee Jae-Sang | Director |