A young couple, Tyler and Maddie, decide to make a radical change in their lives and embark on a road trip in a motorhome. Six weeks later, they witness a car accident on a night road and stop to help. However, the driver dies, and Maddie sees a silhouette in the darkness. As their joy for freedom turns to horror, a strange mark appears on the motorhome, and no matter where they go, something sinister follows them.