A patient named Hyun-woo appears in front of doctors So-jeong and Dae-hyun, who secretly provide assisted dying to terminally ill patients, and requests assisted dying.

Because of Woo-mi, So-jeong's secret is in danger of being revealed. Meanwhile, So-jeong's feelings for Hyun-woo cross the line as a doctor.

Dae-hyun accepts Soo-young's request to assist him in his death and grants his final wish. Meanwhile, So-jeong is caught in a police trap while trying to help Hyun-woo.