When a spaceship crashes to Earth and reveals a group of quirky little space aliens on the run for their lives, the "GadgetGang" kids-Gus, Phoebe, Francesco, Mitsue, Mary Ann, Banana and Tank-soon discover this won't be the boring weekend they had expected. They soon learn that in a point far from the galaxy, an evil warlord named Gana Golber has seized control of the Confederation of Planets and now all of the planets are in danger-including Earth!

Yuri, Lili and Matt get ready for a very special day. But their dreams go down the drain when they discover that the parents have changed their plans and are now going to the same summer camp together, with several children they have seen.

Pepe is a 12-year-old boy who lives with his grandmother, a witch-businesswoman. After discovering that he is adopted and that his parents are alive, he decides to go in search of them, but thus ends up attracting the attention of Edmundo, a biomechanical villain who needs Pepe to realize his enormous evil plan: use the boy's energy to conquer the immortality of its kind.