"Otogi-Jushi Akazukin" is a fantasy anime series that blends elements of fairy tales and magical girl genres. The story is set in a world where fairy tales are real, and the characters from these tales coexist in a magical realm called Märchen Land. The narrative centers on Akazukin, a young girl who serves as a magical warrior tasked with maintaining peace and order in this world. She is accompanied by her companions, the wolf-like creature Val and the sorceress Ringo, who together form the Otogi-Jushi, a group dedicated to protecting Märchen Land from threats.

The plot unfolds as Akazukin and her team are summoned to the human world to combat a mysterious force known as the "Darkness," which seeks to disrupt the balance between Märchen Land and the human realm. The Darkness manifests through corrupted fairy tale characters, turning them into malevolent beings that threaten both worlds. Akazukin, Val, and Ringo must navigate the human world, blending in while using their magical abilities to confront these corrupted entities and restore harmony.

Throughout the series, the characters face various challenges that test their resolve and teamwork. Akazukin, despite her cheerful and determined demeanor, grapples with the weight of her responsibilities and the complexities of her dual existence in both Märchen Land and the human world. Val, initially portrayed as aloof and sarcastic, gradually reveals a deeper sense of loyalty and care for his companions. Ringo, the more reserved and analytical member of the group, provides strategic support and often acts as the voice of reason.

The narrative explores themes of identity, duty, and the interplay between fantasy and reality. As the story progresses, the origins of the Darkness and its connection to Märchen Land are gradually unveiled, revealing a larger conflict that ties the fates of both worlds together. The series balances episodic adventures with an overarching plot, culminating in a climactic confrontation that resolves the central conflict while leaving room for the characters' continued growth and exploration of their roles as protectors of both realms.