The adventure begins there, but groups can readily play out new adventures.
Lady Blackbird uses an extremely light, narrative-focused RPG system. One of our players, Eric, thought was derived from The Pool, an archetypal indy game mechanism from which many specific games took inspiration. Some of the terminology used in the game (particularly the Keys) reminded me of The Shadow of Yesterday/Solar System RPG, which I always thought was a neat game and world but have never had the chance to play.
We'll be doing at least one more session of Lady Blackbird this week. Thanks to our able GM Rachel for offering to run this for us!