Hitching a ride on the airport shuttle seems like the safest option for weary friends Mel (Peyton List) and Jules (Cameron Goodman), who find themselves stranded late at night after flying back from a girls-only vacation in Mexico. That is, until their short drive home descends into a one-way trip to hell. As captive passengers they're now at the mercy of a terrifying driver (Tony Curran) with an unknown agenda, and no exit in sight.