Evil Dead Burn follows a grieving widow who moves in with her late husband's family, hoping to rebuild her life after a devastating loss. Her search for comfort quickly turns into a terrifying fight for survival when an ancient evil begins possessing her relatives one by one. As the house descends into unimaginable horror, she must confront relentless deadites and discover that some promises endure far beyond death. Trapped between grief and terror, she faces a brutal battle where surviving may be the only way to honor the vows she once made.