Here’s the gist of Hereditary : it’s a horror movie about a family that is slowly torn apart by grief, secrets, and a hidden supernatural plan. The biggest shock is Charlie’s death, which happens in a sudden accident, and after that the family’s unraveling gets much darker.

What happens

Annie Graham is a miniature artist whose mother, Ellen, has just died. As Annie, her husband Steve, and their son Peter deal with the funeral and grief, strange things start happening around the house.

Charlie, Annie’s daughter, seems especially connected to Ellen, and the film keeps hinting that Ellen had a disturbing secret life. The turning point comes when Charlie has a severe allergic reaction at a party, and Peter is driving her to the hospital when she is killed in a horrible accident.

After that, the family falls apart. Annie is overwhelmed by guilt and anger, Peter becomes withdrawn, and Annie gets pulled into contact with Joan, who appears to offer help but is actually tied to the sinister force behind everything.

Ending explained

By the end, the movie reveals that Ellen was involved in a cult trying to bring the demon Paimon into a male body, and the family tragedy was part of that plan all along. Peter is eventually used as the vessel for Paimon after a series of violent and supernatural events.

The final scenes show Annie and Steve dead, Peter’s body taken over, and the cult treating the outcome like the completion of a ritual. In plain terms, the family never had a normal “bad luck” problem — they were being manipulated from the start.

Why it hits hard

  • It works as both a ghost-story and a family tragedy.
  • The horror is tied to inherited trauma, so the title “Hereditary” fits in both the family and supernatural sense.
  • Charlie’s death is the emotional shock that everything else spirals from.

TL;DR

Hereditary is about a family destroyed by grief and a cult’s long-running plan to summon a demon into Peter. The ending reveals that the haunting was never random — it was orchestrated.