War has been prevented in Imladun, but the conflict is far from over between the Keepers. As Aideen, Kendra, Peri and Damia set out to retrieve the second piece of the Amir Crystal, they hatch a plan to save the merfolk of Aearad from the pirate ship Ramcirya and its crew. But the plan is not without its flaws, and soon the line between good and evil is blurred and the girls find themselves standing on opposing sides."