Teggs is no ordinary dinosaur - hes an Astrosaur! Captain of the amazing spaceship DSS Sauropod he goes on dangerous missions and fights evil - along with his faitful crew Gipsy Arx and Iggy! A huge sea monster is on the loose in the watery world of Aqua Minor and the astrosaurs are sent to help. But when Teggs and Gipsy travel to the bottom of the sea to investigate they find BIG trouble...