Fixies are kind little people who live inside machines and appliances and take care of equipment. The Fixies hide from people: there are only a few lucky people in the world who communicate with them. In the Professor Eugenius's laboratory there is the Fixies school, and only the boy called TomThomas and his friend Kate know about it. But one day, elusive creatures appear there. They spy on the Fixies and threaten their privacy. Who are these strange robots-crabots, what do they need and who is standing behind them? It turns out that Eugenius has an old enemy, and the Professor is challenged to a duel in order to settle old scores! New friends, Mega and Alt, will come to the aid of our Fixies, and everyone will get into an incredible whirlpool of adventures!