After her revelation of Tate's involvement in the Westfield High Massacre and his death, Violet steps through a door to the past and slowly unveils what really happened in 1994. Could she prevent the horrors of the past that taint the future?

Violet and Tate are dying and they know it. Bound by their shared illness and limited time, the two make a pact to live one last summer to the fullest before they commit the unthinkable. Yet the two find that there is much more to be learned about death.