The Miraculous Mellops centred on the curious adventures of the Mellop children who, after the death of their mother, live at the Lazy Daisy Nursery with their father and aunt, but manage to get caught up in events of intergalactic significance. Series one centred on the search for the new Grand Baby, leader of the Moon, after the former Grand Baby's powers were accidentally fractured into ordinary objects in the Mellops' home. Series two concerned the intergalactic threat offered by the Grubs, who turn anything into their path into toffee before devouring it.