If you're in world two, and looking for Ghido, first you want to take the dragon northeast of Castle Bal to a cave on an island. Enter it and there should be a scene. Then, go to Surgate castle on the continent north of the continent with Bal where there should be another scene. Then go southeast of exdeath's castle and there should be a fleet of ships. Try to land on the large ship and that should eventually lead to the next dungeon.

are you talking about when you destroy the tower?