Once the factions split apart and Tris is gone, everyone finds a place in their new community. But things still aren't normal, especially for Tobias. Four years later, and Tobias still misses horribly. On top of that, they need him to make a choice that could change everything. And he doesn't know if he's ready. Or strong enough. This is the story of what happens to Tobias Eaton after Allegiant ends.