Here, the Luminary learns that it is possible to turn back time and bring back Veronica, along with everyone else who died when Mordegon ruled Erdrea. Navigate the tower until the Luminary reaches the Timekeeper. Follow the path to the tower and place the Wheel of Time on the door. From there, summon Cetacea and guide her to fly the party to the Lost Land, just north of Arboria. Note that there are new objective markers on the world map: visit these, but remember to save the ruins for last. A scene will play where Erik suggests checking out something in the ruins south of Octagonia.
Spend some time there talking to citizens, and once ready, try to leave.
After the credits roll, be sure to visit Arboria where the city is celebrating the memory of Veronica.