In the near future, after a comet strike has devastated the Earth, the Eidrons and their Shadows appeared. When one of these Shadows - giant human-like robots - attacks a passenger plane, young and unsuspecting Leefa gets pulled into a secret war. Accused of summoning the Shadow, Leefa must prove her innocence - only to discover that she really is an Eidron! The Eidrons want to assert their supremacy over the human race, and Leefa must choose sides quickly. Which path will she follow?