The strength of a tenuous coalition is tested, once bitter rivals now prepare to rid the Green Sea of slavery. A small island provides an opportunity to solidify their alliance.

Opposing them, the Shades await. The monstrous beasts hide their faces behind helmets with evil smiles, though they seem more alike than humans would believe.

Beliefs and prejudices are challenged when new, gruesome weapons hit both sides of the battlefield. They must fight against the elements and incompetent leadership on a mission between the rock and cloud.