 A computer engineer named Jennings (Affleck) awakens one day to discover that the last three years of his life and the work he did for a man named Rethrick (Eckhart) during that time has been erased from his memory. He also learns that he agreed to the three years secret work and erasure in exchange for a huge sum of money. But when he goes to collect his paycheck, Jennings learns that before his memory was erased, he gave up the money in exchange for a small bag of worthless clues and trinkets. When the feds come looking for him, Jennings must go on the lam and try to put together the last three years so he can prove his innocence. Using the strange trinkets he previously left for himself, he goes on a journey in search of Rethrick, for whom he used to work, and how he knew that these worthless items would save his life.