When Griffin’s first love and ex-boyfriend, Theo, dies in a drowning accident, his universe implodes. Even though Theo had moved to California for college and started seeing Jackson, Griffin never doubted Theo would come back to him when the time was right. But now, the future he’s been imagining for himself has gone far off course.

On September 5, a little after midnight, Death-Cast calls Mateo Torrez and Rufus Emeterio to give them some bad news: They’re going to die today. Mateo and Rufus are total strangers, but, for different reasons, they’re both looking to make a new friend on their End Day. The good news: There’s an app for that. It’s called the Last Friend, and through it, Rufus and Mateo are about to meet up for one last great adventure --- to live a lifetime in a single day.

The Leteo Institute's revolutionary memory-relief procedure seems too good to be true to Aaron Soto --- miracle cure-alls don't tend to pop up in the Bronx projects. But Aaron can't forget how he's grown up poor or how his friends aren't always there for him. Like after his father died. Aaron has the support of his patient girlfriend, if not necessarily his distant brother and overworked mother, but it's not enough. Then Thomas shows up. Thomas doesn't mind talking about Aaron's past, but Aaron's newfound happiness isn't welcome on his block. Since he can't stay away from Thomas or suddenly stop being gay, Aaron must turn to Leteo to straighten himself out, even if it means forgetting who he is.