After Tris “dies” while failing the last simulation required to open the box—the one representing Amity, the peaceful, forgiving faction—she’s revived, it’s not exactly clear how, by a suddenly contrite Peter, and she and Four set out to retrieve the box and escape. But then Tris makes that last-minute, reckless decision I mention at the top of the review: She hops back in the simulator to open the box, even though Jeanine’s forces are swarming around them. This time, she passes Amity, in a simulation that forces her to forgive her greatest enemy: herself. Yup. 

After the climactic showdown where Tris stands there while a simulated version of herself attacks her, then bursts into a million pixels to symbolize defeat, the box opens, revealing the message: The founders designed this city, and its factions, as an experiment intended to help society reclaim the humanity it had lost. And how exactly does it do that? Unclear! But apparently Divergents are vital to this mission, not the danger Jeanine assumed they were. So, yeah, Tris is still the most special Special.

The founder speaking in the video—who, spoiler for the upcoming Allegiant, due March 2017, is Tris’ ancestor—then invites everyone to come join the rest of humanity, who are apparently just hanging out waiting for them beyond the wall that separates the city from the supposedly toxic landscape around them. Cue hordes of computer-generated people milling toward the giant wall, accompanied by a crescendoing score that’s apparently meant to represent a victory of some sort. Humanity has been saved by a bunch of long-gone, lying meddlers who divided everyone into factions in order to foster a group capable of transcending those factions and thus rendering this society pointless. Sure, why not? These guys seem cool, I totally get why everyone’s so excited to go see what they’re all about.