In a near-future New York City where a service alerts people on the day they will die, teenagers Mateo Torrez and Rufus Emeterio meet using the Last Friend app and are faced with the challenge of living a lifetime on their End Day.

Seventeen-year-old Margaret "Cuckoo" Clark keeps a journal detailing the trials and tribulations of high school life as she and her close-knit group of outcast friends try to break down the barriers between their school's "warring nations.".

"When seventh-grader Eleanor reads an article online claiming that an asteroid will hit Earth in April, she starts an underground school club to prepare kids for the end of the world as we know it"--Provided by publisher.