After the death of her youngest child, Mercy Amoretto attempts to clear her head and heart from grief by cleaning her surroundings. In the garage, she finds an old rope and a tire and, in a fanciful moment, creates a tire swing. Unknown to her, the rope, the tire, and the tree in her yard share a violent history. Once connected, that history is unleashed in the form of two child spirits from decades past. While on the swing, Mercy hears cryptic messages from the spirits and believes the voices are key to finding her dead daughter. Hope turns to horror when two of her children begin to taunt her in torturous ways and when they go missing, all eyes turn to Mercy. She's convinced the ghosts are to blame, but how can anyone believe her when only she hears the voices?