Sam Oliver (Bret Harrison) lives at home with his parents (Andrew Airlie and Allison Hossack) in the Seattle area. Sam dropped out of college (“It made him sleepy”, his Mom explains) and took a dead-end job at the Work Bench, a home-repair superstore. He spent the rest of his time hanging out, playing video games, and pining for his co-worker, Andi (Missy Peregrym).
On Sam’s 21st birthday, his parents behave very strangely, and Sam himself sees hellish visions and experiences odd events. His father eventually claims that many years ago, he was very sick, and in return for restoring his health, he and his wife promised their firstborn child to the Devil (Ray Wise). Although the couple intended to cheat the Devil by not having children, this plan went awry when Satan persuaded their doctor to lie and tell the couple that they could not conceive in exchange for wiping his gambling debts clean. Sam was born shortly thereafter.