Max and Lia's underwater adventure continues in this thrilling series by Beast Quest author Adam Blade! Max is determined to track down the evil Professor even if that means journeying into the deadly Forest of Souls. Lia knows this is a dangerous plan but she will do whatever it takes to help with the search. Max is going to need that kind of friendship when his quest leads him into battle with Manak the Manta Ray. A sting from this Robobeast's tail will paralyze any victim. Can Max defeat Manak and retrieve the third piece of the Skull of Thallos in order to save his father?