From the introduction:
Rebels of the Drifting City is a short form, action-oriented adventure for the fifth edition of the world’s greatest role-playing game. The players are a single cell of a rebel group trying to end the reign of despotic rulers known as the Five. The intention is that this adventure is run in a single session of gameplay, totaling a few hours. The players are dropped into the middle of the action and at a breakneck pace fly toward the end. Think of this like the final act of an action movie.
User summary:
The scenario consists of several PDF files:
40-page scenario
12-page print-and-play maps
4-page print-and-play game cards
2-page print-and-play player handout
1-page print-and-play paper standee "miniatures"
Also see Rebels of the Drifting City Pregenerated Characters