Astronauts on Pluto is the story of a boy, his two best friends, and the adventures they have in their dreams. After studying the solar system in school, Mark decided he wants to become an astronaut. That night after falling asleep, he wakes up to see his two best friends staring out the window of a space ship. They were looking at Pluto. After hours of exploration, the children wake to find it was all just a dream, or was it...? Join Mark, Madison, and Nina as they have the adventures of a lifetime while they sleep.