"Be-Boy Kidnapp'n Idol" centers on the life of Reiichi Kuki, a young and talented idol who becomes the target of a kidnapping plot orchestrated by a mysterious organization. The story begins with Reiichi being abducted and taken to a remote location, where he is held captive alongside other young men who share similar backgrounds in the entertainment industry. The captors, led by the enigmatic and manipulative Shuuichi Asou, aim to exploit the idols' fame and talents for their own gain, using psychological manipulation and coercion to break their spirits and control their actions.

As the narrative unfolds, Reiichi forms alliances with his fellow captives, including the stoic and protective Ryouichi Sakurai and the cheerful yet vulnerable Tatsuya Fujisaki. Together, they navigate the oppressive environment, attempting to resist their captors' schemes while uncovering the true motives behind their abduction. The story delves into themes of trust, resilience, and the darker side of the entertainment industry, as the characters struggle to maintain their identities and aspirations in the face of adversity.

Shuuichi Asou, the primary antagonist, is portrayed as a complex figure whose motivations are gradually revealed. His interactions with Reiichi and the others highlight the power dynamics at play, as well as the psychological toll of captivity. The series explores the emotional and psychological struggles of the characters, emphasizing their growth and determination to reclaim their freedom.

The plot progresses through a series of tense confrontations and strategic maneuvers, as the captives devise plans to escape and expose the organization. The narrative balances moments of suspense with character-driven developments, providing insight into the personal histories and relationships that shape the protagonists' actions. The resolution of the story hinges on the characters' ability to overcome their fears and work together, culminating in a climactic confrontation that tests their resolve and unity.

"Be-Boy Kidnapp'n Idol" presents a blend of psychological drama and action, with a focus on the emotional and interpersonal dynamics of its characters. The series offers a nuanced exploration of the pressures faced by those in the public eye, as well as the lengths to which individuals will go to protect their dreams and identities.