When a school bus full of children goes missing, it's all hands on deck at the BAU. An investigation of the bus driver gives the team a promising lead, but they're sent back to square one when his body turns up on the side of the road. After recovering the bus and many of the kids in an abandoned barn, the team learns the truth: the UnSubs they are chasing are gamers who are attempting to re-create their favorite video game in real life - with lethal consequences.