The future can be changed. You just have to see it first.

When Liv Hall and her friends find boxes of letters hidden in her grandfather's attic, they discover hundreds of psychic predictions addressed to the Premonitions Bureau, a bureau to investigate psychic abilities that mysteriously closed in 1993. As the group reads decades-old premonitions, they stumble on letters from powerful psychics who mailed in their predictions and then disappeared.

A post online about the found predictions alerts a black ops group in charge of the military's paranormal research, who will do anything to get their hands on the letters and the psychics who wrote them. Liv and her friends now know too much, and they're directly in the crosshairs. To survive, they're going to have to rely on each other and the unlikely help of psychics who thought they'd left the dangers of the Bureau behind forever.