作品主要讲述了某天，一款曾经掀起过大热潮的VRMMORPG「YGGDRASIL」停止了运营。游戏原本会停止一切服务，但过了结束时间后，玩家们却发现不能退出，NPC也产生了各自的思想。现实世界中喜爱电玩的主人公铃木悟（真名）在等待系统强制登出时，与“安兹·乌尔·恭”公会的成员一起意外穿越到了异世界，并且变成了拥有骷髅外表的最强魔法师——“飞鼠”。就这样，真正的奇幻传说正式拉开了帷幕。
不死者之王 (季节 1)
End and Beginning (集 1) 7.4
编剧: Yukie Sugawara
播出日期: 2015-07-07
运行时间: 24 min
概述: Momonga is a regular salaryman who leads a guild in an DMMO-RPG known as Yggdrasil. After twelve years of playing the game, the servers are finally shutting down. Momonga logs in for the last time, seeing the game to its end. However, after the clock strikes midnight, nothing changes.
Floor Guardians (集 2) 7.7
播出日期: 2015-07-14
运行时间: 24 min
概述: Grateful that they weren’t cast aside, the floor guardians experience the rule of their true master for the first time. Momonga quickly assess the situation and works toward protecting the tomb from invaders while contemplating what he must do.
The Battle of Carne Village (集 3) 7.9
播出日期: 2015-07-21
运行时间: 24 min
概述: Momonga continues his efforts to protect Nazarick from the unknown forces he may be up against in this world. As he manipulates the Mirror of Remote Viewing, he notices a village being attacked and decides to test his strength against humans.
Ruler of Death (集 4) 8.0
播出日期: 2015-07-28
运行时间: 24 min
概述: Momonga finds that the attackers of Carne Village were Slane Theocracy soldiers dressed as people from the Baharuth Empire. As the attack to lure and eliminate Gazef Stronoff continues, Momonga takes this chance to continue his tests…
Two Adventurers (集 5) 7.6
播出日期: 2015-08-04
运行时间: 24 min
概述: Momonga sets out with Narberal disguised as humans under the names of Momon and Nabe for the city of E-Rantel. There they register to become adventurers in order to gain more information about this unknown world. As they do, evil gathers around them.
Journey (集 6) 7.9
播出日期: 2015-08-11
运行时间: 24 min
概述: While Momonga has some doubts, he accepts Nphirea Balear’s request under the condition that the members of the Swords of Darkness join them. Though her urge to kill keeps distracting her, Clementine continues to slowly find her way to Nphirea.
Wise King of Forest (集 7) 7.8
编剧: Yukie Sugawara
播出日期: 2015-08-18
运行时间: 24 min
概述: Momonga and his group continue to Carne Village. There they see that the villagers are working toward fortifying their defenses against possible future enemies. Nphirea meets up with Enri and asks her about this man named Ains Ooal Gown.
Twin Swords of Slashing Death (集 8) 8.0
编剧: Yukie Sugawara
播出日期: 2015-08-25
运行时间: 24 min
概述: After Momonga registers Hamusuke with the guild, he goes to Nphirea’s home to find that his client has been kidnapped. The zombified remains of the Swords of Darkness litter the storage room. And there, Momonga finds the tortured body of Ninya.
The Dark Warrior (集 9) 8.4
播出日期: 2015-09-01
运行时间: 24 min
概述: Momonga and Narberal begin their respective battles against Clementine and Khajit. Momonga takes this chance to learn about the mechanics of fighting in this world, but in the end, he must show Clementine the consequences of offending him.
True Vampire (集 10) 8.1
播出日期: 2015-09-08
运行时间: 24 min
概述: Momonga finds out that Shalltear has revolted against him, due to something that had happened while she was on her mission with Sebas and Solution. The story rewinds a bit and goes over that very event. What could possibly change her loyalty to him?
Confusion and Understanding (集 11) 8.2
播出日期: 2015-09-15
运行时间: 24 min
概述: Momonga does damage control at the guild while he assesses the reason for Shalltear’s revolt. Coming to the conclusion that she is under an incurable status effect, Momonga goes to the treasury to retrieve some of the powerful weapons of Nazarick.
The Bloody Valkyrie (集 12) 7.9
播出日期: 2015-09-22
运行时间: 24 min
概述: Though Shalltear’s skill set puts Momonga at a complete disadvantage, he steps forward into battle. He gave various world items to his guardians to ensure the safety of Nazarick in his absence. Now, all that is left is a battle of life and death!
Player VS Non Player Character (集 13) 8.4
编剧: Yukie Sugawara
播出日期: 2015-09-29
运行时间: 24 min
概述: Momonga reminds Shalltear that he is the master of Nazarick and that his name carries the weight of all the supreme beings of Ains Ooal Gown. After the battle comes to a close, Momonga quickly takes action to strengthen the defenses of Nazarick.
