"Chikyū Monogatari Telepath 2500" is set in the year 2500, where Earth has become a desolate wasteland due to environmental collapse and nuclear war. Humanity survives in isolated underground cities, cut off from the surface and each other. The story centers on a young telepath named Jiro, who possesses the rare ability to communicate across vast distances using his mind. This ability makes him a valuable asset to his city, as telepaths are the only means of communication between the scattered remnants of civilization.

Jiro’s life takes a dramatic turn when he intercepts a mysterious telepathic signal from a girl named Lilia, who claims to live on the surface. Intrigued and skeptical, Jiro embarks on a perilous journey to the surface, defying the strict laws of his society. Along the way, he encounters other telepaths, each with their own motivations and secrets, as well as remnants of advanced technology and mutated creatures that now inhabit the ruined Earth.

As Jiro ventures further, he uncovers the truth about the surface and the origins of the telepathic abilities. The story delves into themes of survival, human connection, and the consequences of environmental destruction. Lilia’s role becomes increasingly significant as her connection to the surface and its mysteries is revealed. The narrative explores the tension between the underground cities’ desire for isolation and the potential for rebuilding a united world.

The main characters include Jiro, whose determination and curiosity drive the plot; Lilia, whose enigmatic presence challenges Jiro’s understanding of the world; and various supporting telepaths and leaders who represent the conflicting ideologies of their societies. The series balances personal growth with broader societal questions, creating a layered exploration of humanity’s resilience and capacity for change in the face of extinction.