When a group of friends discover how to conjure spirits using an embalmed hand, they become hooked on the new thrill. Participants can only use the hand for 90 seconds, as anything past that will allow the spirit to stay in them.

Grieving her mother's death, Mia (Sophie Wilde) becomes obsessed with using the hand to contact her mom. That is, until she goes too far and unleashes terrifying supernatural forces. Hearing voices, seeing creatures in the shadows, and being followed everywhere she goes, Mia and her friends must try to close the gateway to the other side and send the spirits back with it.