When an alien force attacks Earth, a giant sword falls onto the campus of Paradise Elementary School, transforming it into a flying vessel. The fate of the planet lies with one group of kids who must pilot powerful mecha to stop the invaders, before it's too late!
In the 21st century, the marvels of technology have led to both breakthrough inventions, and criminal syndicates which employ mecha robots to commit crimes. To combat this threat, the Brave Police Project and a special mecha with Super A.I. were created. Six months ago, young Yuuta stumbled across the top secret mecha – named Deckerd - and built a relationship with it, helping it learn to have a heart. Now, the time has come for Deckerd to have its memory wiped. However, even after the event, in the midst of a battle Yuuta’s voice triggers Deckerd’s memory once more and the two fight valiantly together. Though young, Yuuta is sworn into the police force to always be by Deckerd’s side! Together with J-Roader, Deckerd’s support vehicle which fuses with it to allow him to fly; and a Build Team of other transforming robots; Yuuta and Deckerd will help bring peace to the city and take down bad guys where they stand!
Given Kanzen is just a preview for a series that doesn't exist, why not check out a full mecha series? J-Decker is one of the better of the pack, in my opinion. So if you want kids and mecha, try it out.