Attendees at one of Holland's biggest gaming conventions realize that they've unwittingly become contestants in a terrifying game of survival after receiving a text message that implores them to stick around after hours for a chance to win a million euros. By day, gamers at the convention crowd the monitors for a glimpse at the latest titles. Later, as the crowds file out and the convention hall doors are locked, a chosen few decide to accept a most unusual invitation. Having received text messages inviting them to remain in the building after it closes for a chance to make a million euros, the eager gamers do just as instructed. But this isn't your average video game, because if you lose your life here it's "Game Over" for good. As the slaughter starts, the remaining survivors realize that in order to make it through the night they'll need to avoid falling prey to a serial killer who takes sadistic delight in targeting sedentary video game fanatics.