After you have your story arc put together, you'll notice that the PCs will need clues and information to get between the various plot points. The first bit of information they receive is the story hook. This launches the whole adventure. If the story hook doesn't grab them, then the adventure screeches to a complete stop before it gets up to speed. You don't want this to happen. Your opening salvo of information needs to be timely, pertinent to the PCs, actionable, achievable, and not too ho...