Lotus Lagoon (Dread Realm)

DQ6 Walkthrough - Lotus Lagoon in the Dread Realm.

Walkthrough

You need to visit Lotus Lagoon in order to return to the Real World. It's located at the west of Despairia.
Go into the bar. When you put yourself at the end of the line, everyone starts to proceed. Go into the lagoon.
Follow the flow of water. When you come to the top-right corner, make your way toward the center of the lagoon. Get out of water and step onto the ledge at the center.
Go into the cave. Open the locked door with the Ultimate Key, which you obtained in Sunken Ship. Proceed through the cave. You can return to the Real World by the exit.
Head for Dullerton to meet Max Wynne's wife.