With Mimico and Durga sold as gladiators in Roma, Bastet must take command of The Sea Wanderer and take the hard decision between going after them, or, rescuing Arkos. All while the Historic Society is looking for Arkos, to use him to activate an ancient labyrinth under the Argean Sea that hides a deadly secret about Arkos' family; a secret that could risk the fate of every wooly folk in The Copper Seas.