This is the main scene of Chaos on Deponia. The are consists of multiple places for you to explore on. First, you are forced to visit Doc.
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "Floating Black Market" in Chaos on Deponia. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.