It was a monday and Earth needed to go to work, so he needs to get his 4 year-old moon (and sister), named Luna to kindergarten. When they got there Earth handed Luna to the kindergarten asistent, Jupiter. Jupiter: Hello, little Luna. Do you want to join the other moons? Luna: she nods as soon as she was put in the indoor playground she saw diferent moons like: Callisto, Io, Triton, Europa, Ganymede, Titan, Mimas, Enceladus, Iapetus, Rhea, Dione, Phobos, Deimos, Titania, Umbrielde, Ariel; but she notices that Io, Callisto and Triton were playing with eachother and not also with the other moons.