A sinister man and his thugs stalk the city streets. They creep into houses to steal the goodness from sleeping children, using a fiendish brain sucking machine. His evil plan is to create a society which is as dark as he is. Standing in his way is Callum McCullock, a young boy who is confined to a wheelchair, Sophie, his genius, inventor friend and Jinx Patterson, the world's unluckiest boy. Can this unlikely trio foil his plans before all the goodness in the world has been sucked away?