After the dragons awake after the culling of Kralkatorrik we soon face Jormag, Bubbles, Primordus...
The Commander, after a long journey of constant struggle and war has finally met his match from [???], killing him, and sending him to the mists. The, "living world," is reborn for a slight moment in the mists. In the mists, Asurans, Charr, Humans, Norns, Sylvari, and the 5 remaining Human gods work together to remake the world. All Guild Wars 2 achievements are retired and all items including cosmetics are transferred being, "soulbound," they follow you into the mists.
Guild Wars 3 is born and the world is remade exactly how it was prior to the Guild Wars with all prior history being etched into your Commander's soul. The Commander is given a gizmo to time travel back to pre-destruction Guild Wars 2 maps.
Zhaitan moves to attack Orr.
Also, engine upgrade.