Juna Ariyoshi was just a regular Japanese schoolgirl, but she possessed an insatiable thirst for knowledge and a fierce passion for the natural world. Tragically, her life was cut short when she lost her life in a motorcycle accident while touring with her boyfriend, Tokio Oshima. However, Juna was given a second chance by Chris Hawken, who endowed her with the powers of the avatar of time. In exchange, Juna must stand up against the raaja, malicious forces that are the direct result of human pollution. Although Juna was eager to accept the challenge, she soon realized that the task would be arduous. As she works to gain mastery of her new abilities, she is also forced to confront deep issues about humanity's disconnect with nature, which was brought about by advancement in science and technology. With the support of Chris, his capable assistant Cindy Klein, and the international organization SEED, Juna is determined to conquer the raaja and defend all that is precious to her.