High school hurdler Seo-yeon dreams of going pro, but when her father suffers a sudden stroke, she becomes his sole caregiver, confronting harsh realities that threaten her future.

Su-kyung lives with her daughter Yi-jung. They don't quite get along, though. Su-kyung is too hot tempered, while Yi-jung is slow and passive. After having a fight one day, Su-kyung runs over Yi-jung, who thinks she did it on purpose. Their clash ends up in court.

Lesbian couple Sun-woo and Hee-suh buy a small apartment, which they’ve put everything for. But when Sun-woo loses her job and injures her leg, their relationship begins to sour while Hee-suh is sorely responsible for paying the mortgage and interest. Their stress level reaches a fever pitch when a foul odor starts to emanate from downstairs.

To 18-year old Kang-yi, her friends So-young and Ah-ram are everything. Wanting to go somewhere foreign, she runs away from home with them, only to find a strange side of themselves and the balance of their friendship also tips in a weird way. Although they left home as one, but they eventually return home as three. Kang-yi wants nothing more than going back to how they were but that’s easier said than done…

Hong-i, who suffers from debt, brings her mother Seo-hee, who is in a nursing home, to pay off her debt.