

Rufus buys Mateo some Lego bricks and, as they are leaving, they barely manage to survive an explosion at a nearby gym.

As their friendship deepens, Mateo becomes bolder and Rufus begins to take color photos for his Instagram page, as opposed to his usual monochrome posts, to signify his End Day. Rufus and Mateo discuss the plans they had for their life: Mateo always wanted to be an architect and Rufus wishes he could have turned his passion for photography into a career. Rufus opens up about his past, explaining that his parents and sister all received a phone call from Death-Cast on the same day and drowned when their car crashed into the Hudson river, leaving him as the only survivor. Rufus receives a call from Aimee telling him that Malcolm and Tagoe were arrested when they attempted to hold off the police to give him more time to escape. Not wanting to make Lidia upset, Mateo pretends everything is normal, but leaves her an envelope of cash before leaving and blocks her phone number. Mateo and Rufus then go to see Lidia, Mateo's best friend, and her baby daughter (and Mateo's goddaughter) Penny. Mateo says goodbye to his father and leaves him a note for him to read when he wakes up. Rufus agrees to go with Mateo to the hospital so Mateo can visit his father, who has been in a coma for two weeks. Mateo and Rufus meet through Last Friend and decide to spend the day accompanying each other. Rufus flees and goes on the run, downloading Last Friend so that he won't live out his final day alone. Rufus, Aimee, Malcolm and Tagoe, collectively known as The Plutos, hold a funeral for Rufus at his foster home but it is interrupted by Peck, who calls the police to have Rufus arrested for assault.

He allows Peck to leave so that he can return to his foster home to say his goodbyes. His friends Malcolm and Tagoe remind Rufus not to get carried away because of the news. Rufus is in the middle of beating up Peck, his ex-girlfriend Aimee's new boyfriend, when he received a call from Death-Cast claiming he is going to die in the next 24 hours. Mateo initially intends to spend his End Day in his bedroom but decides to try to push himself to truly live, reluctantly downloading Last Friend, an app developed to help lonely Deckers find someone to spend their End Day with. Shortly after midnight on September 5, 2017, Mateo receives a phone call from Death-Cast, a company that rose to prominence seven years prior and is able to predict the deaths of individuals, informing him that he is now a Decker, someone with only twenty-four hours (or less) left to live. ( October 2022) ( Learn how and when to remove this template message)

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