sentences:  When Garth, alongside Atlan, returned to Shayeris, he found the city overtaken by undead creatures.Completely unaware of his own history or his uncle's powers of necromancy, Garth was ill-prepared for the sudden return of Aquagirl, risen from the grave.Together with Letifos (one of the shark warriors), Atlan, and Aquagirl, Garth descended into Shayeris.