Chen Jun, an aimless wannabe otaku, suddenly became the Emperor of a multiverse-spanning kingdom. The Empress Sandora, the Empire's 1.2-meter-tall female general Pandora, and the Supernatural Bureau's Big Sis Lin Xue have all said they're not up to the task. Even Chen Jun's childhood sweetheart, the energetic Xu Qianqian, also said he must become the Emperor. Chen Jun did not have a choice and started his busy life by saving the world from Monday to Friday and playing games during the weekends.

In a post-apocalyptic world overrun by alien-crafted "Machine Lifeforms," humanity is preparing for its last stand. Forced to retreat to the Moon for safety, humans are pinning their hopes on a group of man-made androids known as YoRHa soldiers. Led by the all-purpose battle android YoRHa 2-gou B-gata "2B," the group will fight to take control of the Earth back from its invaders. As war against the machines rages on, the YoRHa slowly begin to see the first shards of truth underlying the brutal conflict. Facing the harsh reality before her, the unwavering warrior 2B starts to question her very existence and just how much she must sacrifice for the sake of humanity.

D.S.O. agent Leon S. Kennedy is on a mission to rescue Dr. Antonio Taylor from kidnappers, when a mysterious woman thwarts his pursuit. Meanwhile, B.S.A.A. agent Chris Redfield is investigating a zombie outbreak in San Francisco, where the cause of the infection cannot be identified. The only thing the victims have in common is that they all visited Alcatraz Island recently. Following that clue, Chris and his team head to the island, where a new horror awaits them.

After having descended upon this world, the gods have created guilds where adventurers can test their mettle. These guilds, known as "familia," grant adventurers the chance to explore, gather, hunt, or simply enjoy themselves. Dungeon ni Deai wo Motomeru no wa Machigatteiru Darou ka Gaiden: Sword Oratoria begins in Orario, the lively city of adventures. The Sword Princess, Ais Wallenstein, and the novice mage, Lefiya Viridis, are members of the Loki Familia, who are experts at monster hunting. With the rest of their group, they journey to the tower of Babel in hopes of exploring the dungeon underneath. Home to powerful monsters, the dungeon will fulfill Ais's desire to master her sword skills, while bringing Lefiya closer to her dream of succeeding Riveria Ljos Alf, vice-captain of the Loki Familia, as the most powerful mage in the land.