Teggs has got serious trouble. His old friends Blink and Dutch from Astrosaur Academy have been dino-napped by a gang of his old enemies, working together and calling themselves the Brothers of the Fang. To save his schoolfriends he must turn against the DSS and deliver top astrosaur secrets into their claws... But when Admiral Rosso finds out, Arx, Iggy and Gipsy are ordered to stop him by any means necessary! To put things right, Teggs must fight friends and foes alike... and his only ally is his biggest rival at Astrosaur Academy - exasperating diceratops Damona.