It's the day Tobias decides to scatter Tris's ashes, the day that would be Choosing Day if they still had factions.
Tobias first takes Evelyn to his apartment. They talk about how he is a politician's assistant now, and about how Marcus disappeared. Good riddance, are we right?
Evelyn gives Tobias the piece of blue glass that always reminded her of him and of how brave he is.
Speaking of brave, the ash-scattering ceremony involves zip-lining down from the top of the Hancock building.
Since this is an epilogue, we're going to learn along the way what happens to the few characters who are still alive.
Shauna has braces and might walk again. (Haven't you been dying to know what happened to Shauna?)
Caleb works in a lab, and people don't hate him as much as they used to.
Cara wears her hair in a braid. Oh, and she works with Caleb in the lab.
Christina works in an office.
Zeke and Amar are policemen, and George trains them.
Tobias clarifies that he's Johanna Reyes's assistant.
Tobias is also doing his best to cope with memories of Tris. He's not as sad now, and he knows she'll always be with him.
Well, his memories of Tris will. Her ashes won't. After a lot of panicking, Tobias finally does the zip-line, scattering Tris's ashes behind him like a contrail.
Afterward, Tobias walks away with Christina, who gives him a little pep talk: "You know what I'm holding on for? […] The moments that don't suck […] The trick is to notice them when they come around" (Epilogue.117, Epilogue.120).
Tobias agrees. Everyone is damaged, but: "We can be mended. We mend each other" (Epilogue.123).