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.

Se-ok assumes that Deok-hee's ailment only requires surgery, but learns from U-yeong that his condition is terminal; she prepares for the surgery and calls Deok-hee, telling him to come right away so she can operate on him.