Jenson Quest lives with his Aunt and helps her out by working in her nursing home, where his grandfather is one of the residents. For years Jenson has heard his granddad's seemingly ridiculous tales of how he and Jenson's father fought along side a friendly alien race and other humans in the defence of the many human 'Realms'. Now, however, it seems that his granddad's ridiculous tales are, in fact, true. Accepting the choice to step forward in place of his missing father and aging grandfather, and join the ranks of the Great Drak, Jenson joins the Keepers and the batch of new recruits and...

10 year old Connor is about to find out that his future will involve his greatest dream... designing and building brilliant robots. The problem is that his future creations have come back in time to protect him from the threat of the Killbots, but now they need HIS help. The Killbot Master wants to take over the world, but he knows that the key to doing it easily, is to stop Connor becoming the Zubot Master. As the Zubots hunt for the Killbot that is hunting for Connor, he finds himself having to hide the truth from his parents, which means placing himself in even more trouble.