Facing financial hardship, Oh Yi-young goes back to residency, making mistake after mistake, until she encounters her first patient emergency.

Exhausted first-year residents consider leaving their positions. Yi-young receives help from Ku Do-won when she faces a difficult situation.

While Um Jae-il gets many compliments, Yi-young, Pyo Nam-kyung and Kim Sa-bi seek methods to comfort their patients and families.

Yi-young joins Prof. Seo's research paper, making Sa-bi jealous, while Nam-kyung causes hospital floor tensions through misguided actions.

Yi-young's direct nature causes problems but helps her console a patient's child, while Jae-il's perfectionism annoys others.

Yi-young becomes defensive after seeing Do-won get snubbed. Sa-bi and Nam-kyung continue to clash due to their opposing views.

Fed up with other departments, OB-GYN residents resist. Nam-kyung grows annoyed while supervising an intern.

After a work hospitalization, Sa-bi deals with Fear Of Missing Out. A new patient challenges Nam-kyung's patience and empathy.

While filming at OB-GYN, Yi-young faces harassment from her boss. An intern exploits Jae-il, and Sa-bi works against a superior.

Nam-kyung and Yi-young are caught between rival professors, while Sa-bi faces workplace abuse but gets support from a better boss.