"Star Driver: Kagayaki no Takuto" is set on the fictional Southern Cross Isle, a remote island with a mysterious organization known as Glittering Crux operating in secrecy. The group seeks to awaken and control the 23 Cybodies, giant humanoid mecha sealed within a dimension called Zero Time. These Cybodies can only be piloted by individuals known as "Star Drivers," who possess a unique mark called the "Mark of the Maiden." Glittering Crux aims to break the seals on the Cybodies to gain ultimate power, but their efforts are hindered by the island's protective barrier, which prevents the Cybodies from manifesting in the real world.

The protagonist, Takuto Tsunashi, arrives on the island and enrolls in Southern Cross High School. Unbeknownst to his classmates, Takuto is a Star Driver and pilots the Tauburn, a powerful Cybody that defies Glittering Crux's control. Tauburn's unique ability to operate outside Zero Time makes it a formidable opponent. Takuto's arrival disrupts Glittering Crux's plans, and he becomes their primary target. Throughout the series, Takuto engages in battles against Glittering Crux's members, who pilot their own Cybodies in attempts to defeat him and claim Tauburn.

Central to the narrative are the relationships between Takuto and two key characters: Wako Agemaki and Sugata Shindou. Wako, a childhood friend of Sugata, is the shrine maiden of the island and holds the key to the Cybodies' seals. Sugata, a calm and reserved individual, is also a Star Driver and initially pilots the Cybody Samekh. The trio forms a close bond, but their dynamics are complicated by Glittering Crux's manipulations and the revelation of Sugata's deeper connection to the organization. As the story progresses, the true nature of the Cybodies, Zero Time, and the island's history is unveiled, revealing a complex web of fate, sacrifice, and destiny.

The series is structured around episodic battles interspersed with character development and world-building. Each member of Glittering Crux, known as the "Four Maidens" and their leader, Head, presents unique challenges and motivations, adding depth to the conflict. The narrative builds toward a climactic confrontation where Takuto must confront the ultimate threat to the island and the world, testing his resolve and the bonds he has formed. Themes of identity, legacy, and the struggle between tradition and change are woven into the story, creating a layered and engaging experience.