A deadly plague falls upon the Fantasia and their quest is under threat. When a clue is revealed to Garland, she sets out with Timon and Boomer to find the cure. But Ozul and Maska now see their chance to seize Eden and the Talisman.

Heading home, the Fantasia's path is blocked by landmines and they are forced to go through the radioactive Tunnels of the Dead. Lilith's singing proves to be an unlikely lifesaver - but the dark tunnels bring danger and reveal a new mystery.