When music and time collide, Vagabond, a rock band on the rise from the present, are thrown into a future where music is strictly regulated by the government. There, they meet Outcast, an underground band of determined women fighting against the censorship, and together work to find a way for the guys to get home.

Then, while they're recording, three members of Outcast are arrested, facing "rehabilitation" to eliminate their "antisocial" views on music and creativity. Without hesitation, Vagabond signs on to help a tiny group of rebels rescue the captives, even though it could mean never seeing the people they care about again.