Having evolved to live in the natural world, magical creatures become trapped when their gateways to safety are destroyed. To ensure their survival, they become overly secretive and keep their numbers to a bare minimum. Their last refuge is in Kernow, where they live in isolated woodlands. Blackwort, the greedy goblin leader, becomes increasingly frustrated at having to live on meager rations and has ambitions to take over all the woodlands in Kernow. Sadly for the peaceful fairies in the adjacent wood, this places them in a perilous position. Trouble is brewing for Tilly Watercress and her fairy family.