Seeds of Chaos

Dr. Bone and Ohm visit the planet Uranus, where they obtain seeds and roc eggs. They then travel to Sky City on Earth, where they leave the seeds and eggs. Once the eggs hatch, the baby rocs eat the seeds and rapidly grow to adult size. The giant winged invaders then begin devouring all of the crops in the nearby fields that supply Sky City with its food. Johnny must stop the flock before famine destroys Sky City.