A decade has passed since inter-cosmic travel was first uncovered, confirming the presence of three parallel universes. Events in one universe, no matter how minor, can trigger a “butterfly effect” that impacts the other worlds. In light of these revelations, the “Dimension Police” and “Space Guardian Academy” were established. Ai, a stunning investigator, is the leading agent of the Space Guardian Academy. Together with her reliable android partner, Bridge, she is tasked with dismantling the inter-cosmic terrorist organization known as DOUBT. During this mission, Ai faces unprecedented challenges as allies turn into foes, adversaries become friends, and the true architect of the sinister scheme is unveiled.