The story is set in a fantasy modern world in which many Secret Society clans called Beast Modifiers can possess and manipulate classical elements from various mythical spirits: The Beast of Elements. Each of them is designated to their respective country, and the Raiju clan is the story's primary focus, which takes place in Japan. The plot follows four main characters: Keiran Mark and his brother Jayson, Isshin Okabe, and Junko Morikawa. An unlikely alliance at first, they all shared the same bloodline, Raiju. They must be willing to work together to unravel the mysteries of The Lightning Okami Lineage and prepare themselves for the greater threat known to humanity.