The document discusses the importance of project management plans and what they should include. It explains that plans should define the project scope, schedule, resources, budget, risks and how progress will be monitored and controlled. Effective plans consider who will use the plan, what work needs to be completed, how it will be structured, when activities will occur, who is responsible for the work, and the potential costs involved. Thorough planning helps guide the project activities and ensures all necessary aspects are addressed upfront.