Sláine: Books of Invasions, Volume 3 (Sláine #12)

Slaine has returned from the otherworld to rescue the besieged city of Tara, the energy of the Goddess warping him as he wades into battle. The Tribes of the Earth Goddess and the Atlanteans unite in an epic battle as the sea demons are driven back beneath the waves. But Lord Odacon will not surrender so easily and soon Slaine will face an even greater menace as Odacon spreads his evil once more through the Land of the Young!