"Earth Girl Arjuna" is a 13-episode anime series that blends science fiction, environmentalism, and spiritual themes. The story centers on Juna Ariyoshi, a high school girl who dies in a motorcycle accident but is revived by a group of mysterious beings known as the Raaja. These entities grant her the power to perceive and combat environmental degradation, appointing her as the "Avatar of Time" to save Earth from ecological collapse. Juna's newfound abilities allow her to see the world's suffering, including the pain of animals, the destruction of ecosystems, and the invisible pollution caused by human activity.

As Juna begins her mission, she encounters Chris Hawken, a scientist and environmental activist who becomes her mentor and guide. Together, they confront the Raaja, alien entities that manifest as destructive forces representing humanity's exploitation of nature. Juna struggles with the emotional and psychological toll of her role, as her heightened awareness exposes her to the overwhelming scale of environmental devastation. The series explores her internal conflict between her desire to live a normal life and her responsibility to protect the planet.

Throughout the narrative, Juna learns about the interconnectedness of all life and the consequences of humanity's actions. The story delves into themes of sustainability, spirituality, and the balance between technological progress and environmental preservation. Juna's journey is marked by encounters with various characters, including her childhood friend Tokio Oshima, who provides emotional support, and Teresa Wong, a fellow Avatar who offers insight into the challenges of their shared mission.

The series incorporates elements of Hindu mythology, particularly the concept of the avatar, as well as references to quantum physics and ecological science. The Raaja are depicted as both antagonists and manifestations of humanity's collective impact on the planet, serving as a metaphor for the consequences of unchecked industrialization and consumerism. Juna's growth as a character is central to the narrative, as she evolves from a reluctant savior to a determined advocate for Earth's future.

"Earth Girl Arjuna" presents a thought-provoking exploration of environmental issues, blending a personal coming-of-age story with a broader critique of modern society's relationship with nature. The series emphasizes the urgency of addressing ecological crises while highlighting the emotional and spiritual dimensions of environmental activism.