Wallis Conway, a troubled doctor of neurology, is convinced his life has already hit rock bottom... until he wakes up one morning to the sound of a mysterious voice that he alone can hear. Calling herself The Conductor, the voice communicates with Wallis through a supposedly untraceable device planted in his brain. When The Conductor starts to blackmail Wallis with threats against his life and his family, he has no choice but to become her unwilling pawn. Under her control, he finds himself in a terrifying 12-hour race against time to fulfil a series of increasingly dangerous missions, with law enforcement hard on his heels. As her meticulous plan unfolds, Wallis starts to grasp sinister motives of The Conductor and those she works for.