Overlord Movie 2: Shikkoku no Eiyuu

Ainz continues building the name of the dark-armored adventurer Momon while protecting the secrets of Nazarick. A mission involving the young alchemist Nfirea draws Momon and Nabe into a plot led by Clementine and the necromancer Khajiit, whose schemes threaten the city of E-Rantel with an army of the dead.

Even after that danger is crushed, a far more personal crisis awaits: Shalltear Bloodfallen turns against Nazarick under the influence of an unknown power. Unable to risk leaving one of his strongest guardians in enemy hands, Ainz prepares to face Shalltear himself, entering a duel where overwhelming magic and careful preparation will decide whether he can bring her home.