The setup is simple: Maxwell, the main character you control, wants to get a star (the Starite) in each level and that can't be done just like that. Two kinds of challenges are presented: puzzle and action. In the puzzle version you need to complete a mission, usually helping or fighting people or animals. The Starite is then the reward for succesfully completing the assignment. The hint you get at the beginning helps you on the way. In the action version you first get to see where the Starite is located and then need to find a way to get there. Also here you get a hint to help.