Life at Dr. Hugo’s Factory for Making Robots has never been crazier. Zander, a gifted but absent-minded inventor, has just finished a bright-eyed little robot he calls “Hero.” Hero is obedient, hard working, and eager-to-please. The perfect cover. But what do robots do when their inventors aren't looking? When the coast is clear, Hero and his fellow robots take off on an epic journey full of curious animals, mischievous children and sleep-deprived scientists.