Captain Teggs is no ordinary dinosaur - he's an astrosaur! On the incredible spaceship DSS Sauropod, along with his faithful crew, Gypsy, Arx and Iggy, Teggs rights wrongs, fights evil and eats a lot of grass! Teggs and his crew have been sent to a beautiful - and previously peaceful - island. The clean-living, vegetarian bactrosaurs have always lived in harmony with their sea-dwelling neighbours, the shark-like predatory megalodons. But now the two races are on the verge of war! The island is sinking - and waste from the bactrosaurs is invading the megalodon world. Teggs are his crew are suspicious of a newly arrived race, the terror birds. Famous for being fighters, these ones claim they are peaceful - but Teggs wonders if they could be stirring up trouble between Queen Soapi and King Fin, the megalodon leader. Can the astrosaurs help solve the riddle and stop the island disappearing into the sea for ever?