One of the most fun things to do in Club Penguin are the missions, which you get to do once you become a secret agent. When you are a secret agent, go to the HQ and you can do the different missions. They are fun stories that are kind of like a game within the game. Right now there are ten missions that you can do and if you get stuck there are plenty of mission walkthroughs on the Web that you can read. There are also a lot of mission videos on YouTube. The next mission, number 11, is due out soon but there is no date from CP about when the mission will come out.