In a world where an organization called Death-Cast calls people to let them know they will die that day, two teenage boys, Mateo Torrez and Rufus Emeterio, receive the dreaded news. Strangers connect through the Last Friend app to spend their final hours together. Mateo, anxious and alone as his father is in a coma, meets Rufus, who is trying to say goodbye to his life and friends. Over the course of their End Day, they forge a deep, unforgettable connection, experiencing life, love, and loss in just one day. The young adult romance novel by Adam Silvera reminds readers that life is finite, and true love can be found even in the face of inevitable death.