Leigh Somerset wants to spend some quality time with her kids before they grow up, and her husband has always fancied himself sort of a Clark Griswold figure. So the Somersets will be spending their family vacation on the road, driving from suburban Milwaukee to Orlando, Florida. Already off to a rocky start, they stumble upon an abandoned, half-burned down farmhouse in Indiana, and the Somersets inadvertently unleash an eerie history that will follow them the rest of their trip.

From creepy indoor waterparks to paranormally plagued Cracker Barrels, it's one thing after another in the pursuit of the great American summer road trip. Will the Somersets be able to shake these bad vibes and get on with the family bonding? Or will the road less traveled quite literally become the highway to hell?