I could use some help with fleshing out the long-term goal for one of my player characters in my current campaign.
The tldr version is that the character wants to find a lost kingdom that ended up removing its self from existence. It sits in its own pocket universe.
What I need help with is figuring out what steps the characters need to take to get to this lost city.
I am currently thinking maybe some kind of ritual and magical portal or maybe some kind of key or compass like in pirates of the Caribbean.
Now this whole thing started out as about a sentence worth of back story. After having a long think here is what I kind of came up with to flesh the idea out.
During the Dark Age the big bad caused chaos and destruction. As it arrived at one particular kingdom the residents decided to do something about it. Unable to face the kaiju big bad they decided to use their magic to try to phase the kingdom out of their reality temporarily. Something went wrong however and the kingdom had become trapped in its own pocket universe.
From that point on the kingdom entered into myth and legend. Some believe it once existed but was destroyed, some believe it disappeared and others believe it was never there to begin with.
The character wants to find the lost kingdom in order to achieve fame and glory. They are the last child of a large family and feel over looked and want to make their own mark on the world. They believe that there are mass amounts of treasure there as well.
The kingdom in question exists alone in its own pocket universe unreachable through normal means.
I feel like i have something but i just dont know how to execute on the idea.
Any suggestions would be appreciated.