Four friends find themselves catapulted into uncharted territory when they cross a bridge linking Earth to other worlds. They escape the dark Lord Cavosus, finding refuge at the ancient mystery school in the City of Luxor. Under the tutelage of the ageless Masters from across the galaxy, they undergo grueling training to become the first humans to join the ranks of the Galactic Seed Hunters. Considered too green by some, but with the planets on the brink of intergalactic war, Alex, Tane, Zhi and Olivia must seek the seeds of creation, to save not just planet Earth but the galaxy itself.