 An engineer named Jennings (Affleck) awakens one day to discover that the last two 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 two 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 police come looking for him, Jennings must go on the lam and try to put together the last two 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, where he used to work, and how he even knew that these worthless items would save his life.