After trying a new version of the drug Changa, Maryssa finds herself transported to a hell dimension where the demon, Belial, latches on to her. through Maryssa, Belial begins killing her friends one by one in horrific hallucinations.

Six stoner best friends discover a viral video of a local teen who disappeared years ago from an alleged haunted house in their neighbourhood. Searching for one last adventure before graduating high school, the teens decide to investigate this local urban legend, only to discover this night could be their worst, and possible last, experience of their lives.