Heart to Heart

Hongdo plans to work disguised as a grandma. Iseok faces a crisis with a patient.

Iseok faces backlash after a self-harm incident. Hongdo's excited for her date.

Hongdo seeks treatment to greet Du-su; Iseok's clinic faces issues.

Hongdo confesses to Du-su, who is taken aback. Iseok sees a shocking scene with his girlfriend.

Hongdo feels guilty about her night with Iseok, despite liking Du-su. Go refuses medicine.

Hongdo and Iseok feel closer after their night together. Iseok's call shocks Hongdo.

Hongdo is angry at Iseok, but Du-su's confession stuns her. Iseok warns Go.

Du-su's feelings for Hongdo deepen, but she is drawn more to Iseok.

Hongdo and Du-su see Iseok hug Yeon-woo. Du-su confronts Hongdo. Iseok leaves her alone.

Hongdo decides to follow her heart after Iseok's surprise. Go visits Young-rae.

Iseok confronts Hongdo at a seminar. Se-ro plans a farewell for Du-su.

Go is furious at Iseok for hiding Hongdo's disguise. He uncovers shocking truths.

Iseok confronts Hongdo in anger, while Go hopes to send her away. Se-ro's warmth softens Du-su.

Iseok learns Hongdo killed Ilseok, unleashing his anger and shocking confessions.

Iseok endures silently, weighing heavily on his family, while Hongdo shows troubling signs.

Lee-seok reveals secrets to Hong-do, fueling her anger. Dusu worries as Serou prepares to leave.