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Struggling with her finances, Oh Yi-young reluctantly returns to resident life — making blunder after blunder. Soon, she faces her first patient crisis.

The first-year residents contemplate quitting after burning out from hospital life. When Yi-young is backed into a corner, Ku Do-won comes to her aid.

As Um Jae-il receives constant compliments, Yi-young, Pyo Nam-kyung and Kim Sa-bi try to find ways to bring comfort to their own patients and families.

Yi-young gets roped into a research paper with Professor Seo, sparking Sa-bi's jealousy. Nam-kyung misguidedly creates tension on the hospital floor.

Though Yi-young's bluntness gets her in trouble, she uses it to comfort a patient's child. Jae-il's need to overachieve becomes a nuisance to others.

Witnessing Do-won being snubbed, Yi-young finds herself getting defensive. Meanwhile, Sa-bi and Nam-kyung can't stop clashing over their differences.

Frustrated by the other departments, the OB-GYN residents decide to push back. Meanwhile, Nam‑kyung finds herself irritated as she oversees an intern.

After being hospitalized at work, Sa-bi struggles with the fear of missing out. A new patient’s arrival tests Nam-kyung’s patience — and her compassion.

As a TV crew films the OB-GYN department, Yi-young's superior torments her. Meanwhile, an intern takes advantage of Jae-il and Sa-bi undermines a senior.

Nam-kyung and Yi-young find themselves in the middle of two competitive professors. Sa-bi endures an abusive superior but finds solace in a kinder boss.

While trying to keep her relationship with Do-won secret from the hospital, Yi-young gets hands-on OB-GYN experience with a demanding professor.

As their first year nears its end, the residents face the hospital's never-ending bustle — especially Yi-young, who finds herself at a crossroads.