Kang Tae Ju (Namkoong Min) is a renowned neurosurgeon who now serves as the director of a hospital owned by his wife, Ko Se Yun (Lee Seol). Their marriage has quietly fallen apart, and Tae Ju finally asks for a divorce.
The very next day, before the divorce can happen, Se Yun is kidnapped.
To make matters worse, the police begin to suspect Tae Ju himself of orchestrating her disappearance. Suddenly, he finds himself in a desperate race against time—trying to prove his innocence while searching for the woman he was ready to leave.
As he uncovers the truth, Tae Ju is pulled into a dangerous conspiracy involving powerful enemies, hidden motives, and shocking secrets. The deeper he digs, the more he realizes that his wife—and their marriage—were never what they seemed.