"Tenjo Tenge" is set in a high school environment where martial arts and supernatural abilities play a central role. The story unfolds at Todo Academy, a school divided between regular students and the Juken Club, a group of elite martial artists with extraordinary powers. The narrative begins with Souichiro Nagi and Bob Makihara, two delinquents who transfer to Todo Academy with the intention of dominating the school. However, they quickly discover that the Juken Club, led by the powerful Mitsuomi Takayanagi, is far more formidable than they anticipated.

The Juken Club is deeply rooted in the history of the Takayanagi and Shin families, who possess ancient martial arts techniques and supernatural abilities known as "Dragon's Pulse." Mitsuomi Takayanagi, the current leader, seeks to consolidate power and control the school, but his ambitions are challenged by his estranged brother, Masataka Takayanagi, and other members of the Juken Club. The conflict between the brothers is fueled by a tragic past involving their father, Sohaku Takayanagi, who was a ruthless and manipulative figure.

Central to the story is Maya Natsume, a skilled martial artist and member of the Juken Club, who wields the powerful Dragon's Eye ability. Maya's twin sister, Aya Natsume, also plays a significant role, as she becomes a key figure in the ongoing power struggles within the school. The Natsume sisters are descendants of the Shin family, and their abilities make them pivotal in the unfolding events.

As the series progresses, the narrative delves into the history of the Takayanagi and Shin families, revealing a complex web of alliances, betrayals, and long-standing rivalries. Flashbacks provide insight into the origins of the Dragon's Pulse and the tragic events that shaped the current generation of fighters. The story explores themes of loyalty, power, and the consequences of wielding immense strength.

The main characters are driven by their personal motivations and relationships, which often intersect with the larger conflicts within Todo Academy. Souichiro Nagi, initially a brash and overconfident fighter, undergoes significant development as he becomes more deeply involved in the Juken Club's affairs. Bob Makihara, his loyal friend, provides comic relief but also demonstrates growth as a fighter. The Takayanagi brothers, Mitsuomi and Masataka, embody the struggle for power and the burden of legacy, while the Natsume sisters represent the balance between strength and compassion.

The series combines intense martial arts battles with supernatural elements, creating a dynamic and action-packed narrative. The intricate relationships between the characters and the rich backstory of the Juken Club add depth to the plot, making "Tenjo Tenge" a compelling exploration of power, rivalry, and the enduring impact of the past.