It turns out the prison planet can teleport itself. Sternum is revealed to have been Femur's brother. Tekla and Pyrus must confront Lord Mantle, who wants to rule the Alliance. Mantle shuts down the defenses for the entire Alliance endangering the fleet. Meanwhile, Jewelia and Graveheart lead an attack on Sternum's camp but are driven off by its superior arsenal. Sternum was the rightful ruler of Bone before being overthrown by his brother and seeks revenge on Femur. Graveheart and Jewelia retreat while Tekla has no choice but to pass over leadership to Mantle. The Rock King reveals a key which is the defense key given by Tekla to Jade. On the prison planet Jade is set to kill Femur.
