It's nearly one hundred years into the future, and we have successful colonies on Mars and Titan. Recently adopted by a family on Titan, Peter struggles to find his place on this strange moon where there is nothing to do. Luckily, he discovers an alien symbol that could uncover a mystery that leads to an ancient treasure. Peter and his new sister, Julia, search for clues to discover where this treasure is all while making new friends, avoiding bullies, and figuring out how to be part of a real family.