Purpose: Why are you here? What product are you building?
Problem: What problem are you solving? How is this addressed today and what are the drawbacks of current ways of solving it.
Product: How will your product help to solve the problem? What is so special about your product?
Market opportunity: Who is going to buy your product? Is there a market for it? Is it growing? Sometimes there is no market for your product so you need to create it.
Competition: What major competitors offer similar products/services? How are you going to win the competition?
Business model: How are you going to generate revenue?
Financials: 2-5 years financials including key assumptions
Team: Who are the founders and other team members? What drives you?