One morning Milo gets an unexpected gift--RO-BO, a robot ready for any adventure. Milo only wants to spend time with his new robot, and together they play video games, listen to stories and learn new skills, like how to make breakfast. Then Milo's mother insists he go outside to play with other kids. RO-BO can help with that too! Soon Milo and some new friends are building a spaceship together, and RO-BO steps in to take them on a great adventure to another world. But disaster strikes when RO-BO uses too much energy and its batteries run down. It seems like hope is lost until the friends start playing catch with RO-BO and its battery charges through kinetic energy. By working together, the new friends find their way home and plan for their next amazing adventure.