Michael Jennings is a genius who's hired – and paid handsomely – by high-tech firms to work on highly sensitive projects, after which his short-term memory is erased so he's incapable of breaching security. But at the end of a three-year job, he's told he isn't getting a paycheck and instead receives a mysterious envelope. In it are clues he must piece together to find out why he wasn't paid – and why he's now in hot water. What seemed like a breezy idea that would net an engineer millions of dollars ends up leaving him on the run for his life and trying to piece together why he's being chased.