Se-ok is in search of Deok-hee's weaknesses. She visits a former patient, Kim Myeong-jin, who is the main reason for Deok-hee's betrayal, and asks him why he wanted to erase her from his life.

Se-ok's past comes back to haunt her when Doo-bong, a former patient, calls and warns her of a threat coming her way. To make matters worse, a sudden house fire pushes Se-ok to the edge.

A rich patient requires a highly complex surgery that needs two skilled neurosurgeons. Deok-hee comes on board, taunting Se-ok and telling her he wants to see what her world is like. Stuck with no other choice, the two reunite at the operating table.