How do you beat alien conspiracy mission in club penguin elite penguin force?

First go to the forest where the Dancing Penguin is where the markings is. Tap him with your stylus. Decode the message and it reads "Invasion. The mother ship landed in town" go to the town and decode that one, then the mine and decode that one. The markins were made by the bronw pengin himself. Answer the questions and he will you a thankyou card and a "alien helmet". You have now completed mission 4