Technology-challenged historian Regis is on a mission of mercy: his miserably pregnant cousin, Penny, needs a diversion and the only thing that will satisfy is the latest version of a video game, Dead Knights at Castle Kill.

When Regis braves the aisles of a video game retailer, he's swept off his feet by Mars, the tall, dark, and gorgeous salesclerk who works there. But there's very little chance that such a savvy gamer would ever notice a man who can barely use his computer.

Deciding the obvious solution is to fake it, Regis enlists the aid of his cousin to convince Mars he's a high-level gamer. The plan works perfectly right up until Mars invites him to a prestigious gaming conference, where even Regis's high IQ isn't enough to fake his way through dozens of real gamers—and will definitely cost him the man he's been lying to the whole time.