When a young girl is found dead on a small, wooded island, her teenage brother's postmortem visions point to an evil presence within their own family.

A man and his wife living in a remote farmhouse are interrupted by a stranger, who is taken prisoner and interrogated by the husband.

After a young couple witnesses a gruesome highway accident, they soon realize they did not leave the crash scene alone, as a demonic presence called the Passenger that won't stop until it claims them both turns their van life adventure into a nightmare.