The Angelic Guard, who call the heavens their home, have been tasked with collecting the orbs scattered across the world. Lucifer—a leader of the Angelic Guard with a rebellious streak, said to wield power rivaling the Almighty—carries out her duty along with Uriel, also a leader of the guard. Together, they go about executing their mission, until Holy Magistrate Keter—the one who leads the heavens under the Almighty's will—tells Uriel of Lucifer's planned rebellion. Initially in disbelief, Uriel then learns that the accusations against Lucifer may be connected to an event that once threatened to shatter the heavens.

主人公·焰莲回到曾经住过的街道·神之原，感受到了违和感。他确实应该在这条街道住过，却对那时的事情没有记忆。此时，莲的智能手机突然被安装了从…

少年「焰莲」在某天回到了以往曾居住过的城市「神之原」，但他虽然走在熟悉街道上，却感受到一股不知名违和感且无法回想起过往记忆…… 　　突然之间，焰的手机被强迫安装未知名游戏「怪物弹珠」，并从中飞出各式怪物展开战斗。伴随着超次元的发展，焰隐约发现隐藏在记忆深处的秘密就是一切关键。究竟在一众伙伴及怪物们帮助下，真实之门是否会向他开启呢？

某天，彼方遭到正体不明的怪物们袭击。救了他的人是神秘的蓝发少女空。她向彼方寻求帮助，对他说“只有你能拯救世界！”。为了从企图利用黑暗之力肆意操控世界的千寿等人手里拯救世界，彼方、空、吸血鬼兄妹冬夜和夕奈，与龙马、神威、半藏等怪物一同面对赌上世界命运的战斗。

某天，彼方遭到正体不明的怪物们袭击。救了他的人是神秘的蓝发少女空。她向彼方寻求帮助，对他说“只有你能拯救世界！”。为了从企图利用黑暗之力肆意操控世界的千寿等人手里拯救世界，彼方、空、吸血鬼兄妹冬夜和夕奈，与龙马、神威、半藏等怪物一同面对赌上世界命运的战斗。

The year 20XX. Humans called "Concords" and ultra-high-performance AI called "Codemen" team up as partners to compete in the card battle game ZENONZARD. People are going wild with excitement at the world championships, THE ZENON. One day, Souta Azuma, an average high school student, is challenged to a battle by a mysterious woman, Eilietta Lash. She reveals that she’s a Codeman and that her intent is to team up with Souta and participate in THE ZENON. Souta reluctantly agrees. Souta and Eilietta’s first opponent turns out to be the super-famous player Shion Saionji, who attends Souta’s school, and her partner, Ash Claude.

This town, is not just a normal town. There's laughter, love and emotional moments. An unpredictable ordinary life presented by the residents! Exciting stuffs come one after another. Welcome to CITY.

剧场版名为《青鬼 THE ANIMATION》，剧场版的故事将与游戏、电影的故事完全不一样，是一个全新的原创故事，并将塑造一个全新的恐怖又扑朔迷离的青鬼。喜欢恐怖动画的粉丝千万不要错过哦！