Yeo-reum is satisfied with her life in Angok with Bom, Bom's grandmother, and, of course, Dae-beom by her side. Every day seems too peaceful to be true until something happens. Yeo-reum is on her way back from a date with Dae-beom, and Bom is also back home late that night. However, Bom's grandmother is nowhere to be seen.