Five awesome aliens have been unleashed from the darkest corner of the galaxy - and they're out to destroy the universe. Only Cosmo, a young boy from planet Earth, has the power to stop them. Recruited by the elite defence organisation G-Watch to defend the galaxy, Cosmo must prove himself and commence battle against the deadliest aliens in space. In their third mission, Cosmo and Nuri journey into Deep Space. The hideous arachnid alien Zillah is terrorising the galaxy's main trade route - and has built a deadly lair in the perilous Tarn Asteroid Belt. Has Cosmo got what it takes to navigate his way through the treacherous asteroid maze and defeat Zillah?