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.