A patient comes first -- no matter what. Seo-jeong gets an unexpected pep talk. Teacher Kim's compassion proves to be multilayered.

Dong-ju makes a call -- to Chairman Shin. Teacher Kim reminds Yun-wan of the importance of basics. Seo-jeong vexes an old mentor. It's Friday at Doldam.

The inspector from Geosan tries to stop the Doldam staff from treating patients. But there's a multicar accident -- and a drunk driver at the scene.