"Shin Bikkuriman" is a fantasy adventure anime that revolves around the conflict between the Bikkuriman, divine beings who protect the universe, and the Jikūma, malevolent entities seeking to plunge the world into chaos. The story is set in a multiverse where various dimensions intersect, and the Bikkuriman are tasked with maintaining balance across these realms. The protagonist, Bikkuri, is a young Bikkuriman who embarks on a journey to gather the scattered "Bikkuri Stones," powerful artifacts essential for defeating the Jikūma and restoring harmony.

Bikkuri is joined by a diverse group of allies, each representing different dimensions and possessing unique abilities. Among them are Shiro, a skilled warrior from the Ice Dimension; Aka, a fiery and impulsive fighter from the Flame Dimension; and Midori, a calm and strategic thinker from the Forest Dimension. Together, they traverse various worlds, encountering both allies and adversaries while uncovering the mysteries of the Bikkuri Stones and the origins of the Jikūma.

The narrative is driven by episodic quests, with each episode focusing on a specific dimension and its challenges. The characters face trials that test their courage, teamwork, and resolve, often learning valuable lessons about trust and perseverance. The Jikūma, led by the enigmatic and powerful Dark Bikkuriman, serve as recurring antagonists, constantly thwarting the heroes' efforts and escalating the stakes.

As the series progresses, the overarching plot delves into the history of the Bikkuriman and their connection to the Jikūma, revealing deeper layers of conflict and betrayal. The discovery of ancient prophecies and hidden truths adds complexity to the story, culminating in a climactic battle that determines the fate of the multiverse. The series balances action, humor, and emotional moments, creating a dynamic and engaging narrative suitable for a wide audience.