Juna, a high school student who does traditional Japanese archery, is riding along the seaside on her friend Tokio's motorcycle when they get into a mysterious accident and she dies. As her spirit floats away, a boy stops her and tells her he will grant her a second life if she will fight to defend the Earth from the strange 'worms' called Raaja. We also meet the mysterious organization SEED, who are on scene at a disaster involving the Raaja at a nuclear power plant.