After learning that Kang-se is Poong-ju's brother, Min-bo falls into deep thought and begins to worry about both Si-ra and Marie. Kang-se also struggles to process Poong-ju and Si-ra's growing relationship. Meanwhile, Mi-ryoung's sudden appearance sends shockwaves through the hospital. As Eun-kyung and Ki-sik uncover the past between Poong-ju and Mi-ryoung, they begin plotting how to use it to their advantage.
