"Red Sprite" is a manga series set in a world where humanity has colonized the skies, leaving the surface of the Earth uninhabitable due to environmental collapse. The story unfolds in a floating city called Eden, where society is divided between the privileged elite living in the upper levels and the impoverished masses struggling in the lower slums. The narrative centers on Tatsuya, a young man from the slums who becomes entangled in a conflict involving a mysterious and powerful entity known as the Red Sprite.

Tatsuya's life takes a dramatic turn when he encounters a group of rebels fighting against the oppressive regime of Eden. These rebels, known as the Sky Knights, are dedicated to dismantling the corrupt system that perpetuates inequality. Tatsuya is drawn into their cause after discovering that he possesses a unique ability to harness the energy of the Red Sprite, a phenomenon that manifests as a crimson lightning bolt with immense destructive potential. This ability makes him a key figure in the rebellion, as the Red Sprite is believed to hold the key to overthrowing the ruling class.

As the story progresses, Tatsuya forms alliances with other key characters, including Aya, a skilled pilot and strategist, and Ryu, a former soldier disillusioned with the government. Together, they navigate the complex political landscape of Eden, facing off against powerful adversaries such as the elite Sky Guard, a military force tasked with maintaining order and suppressing dissent. The conflict escalates as Tatsuya learns more about the origins of the Red Sprite and its connection to the Earth's ruined surface, revealing deeper layers of conspiracy and betrayal.

Themes of rebellion, sacrifice, and the struggle for justice are central to the narrative, as Tatsuya and his allies confront the moral complexities of their fight. The series explores the consequences of unchecked power and the lengths to which individuals will go to achieve freedom. Through its action-packed sequences and character-driven drama, "Red Sprite" presents a compelling tale of resistance in a dystopian world where the line between hero and villain is often blurred.