Gabby Duran, who constantly feels like she’s living in the shadows of her mother and younger sister, finally finds her moment to shine when she inadvertently lands an out-of-this-world job to babysit an unruly group of very important extraterrestrial children who are hiding out on Earth with their families, disguised as everyday kids.

Kit Secord receives a surprise package on her birthday revealing that she's next in line to become the Rocketeer, a legendary superhero who has the ability to fly with the help of a rocket-powered jet pack. Armed with her cool new gear and secret identity, Kit is ready to take flight and save the day with her gadget-minded best friend, Tesh, and airplane-mechanic uncle, Ambrose, who join her on epic adventures.