Overlord III Season 3 contains episodes 1-13 of the anime directed by Naoyuki Itou.

This land will fall to his command—the overlord is back! While Ains Ooal Gown’s conquest over Yggdrasil is bearing fruit, a deadly power struggle between empires could lead to Ains’ downfall. But that’s the least of his worries. Despite praise from his subjects, Momonga is finding it harder and harder to keep up the act as the terrifying Ains. On top of it all, Nazarick is being invaded. Can the mighty overlord maintain his reign, or will this be his final stand?