Just as Mera and Orm prepare to fight side by side to save Atlantis from utter desolation, Nereus makes Orm a devious proposal that's hard to refuse: control of the Xebellian army in exchange for Tula's unwilling hand in marriage! Can the Ocean Master really resist the call of the sea? Or will Mera have to fight her own people to help Tula escape a fate that was once her own?