After witnessing the brutal murder of his family as a young child, Jack Brooks (Trevor Matthews) is left with an unquenchable fury that he is constantly fighting to control.

Now working as a plumber and struggling in a relationship with his girlfriend Eve (Rachel Skarsten), Jack's life has become a downward spiral. One night, Jack attempts to fix Professor Crowley's (Robert Englund) old, rusted pipes, but unknowingly awakens an ancient evil. Lured by this demonic power, Professor Crowley discovers a monstrous black heart that quickly forces its way inside of him. Possessed by the heart now beating in his chest, the Professor starts a slow, gruesome transformation. It is at this moment that Jack realizes he can't run from his past, and quickly discovers the true purpose of his inner rage.