Sarah and her friends must thwart the machinations of the Dark Lord and take the fight to his Citadel to save the Great Tree.

After setting out on an exciting journey to the Ancient Forest, Sarah learns from a forest wizard that the Great Tree, which is the soul of the Ancient Forest, is in danger. The Dark Lord, with the help of his vassals, poisoned the heart of the Great Tree. Sarah and her friends must thwart the machinations of the Dark Lord and take the fight to his Citadel to save the Great Tree.