Ambition has disappeared?

My ambition storylets have always been available in one location or another, but now my “Nemesis” ambition is at a 9 and I can’t seem to find the next step anywhere. How do I move this story forward? Thanks!

I suspect you need to head to the Forgotten Quarter.

wiki is a bit unclear there:

Thank you! Now I just need to get my hands on a street sign…but at least i have a direction to pursue!