Mum and Henry are making a delivery to Axiwan. Mum wants Henry to release the Cargo Valve while she settles payment with the Antoid Queen.
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "Tutorial. Releasing the Cargo Valve." in Henry Mosse and the Wormhole Conspiracy. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.