After learning that one of his marks is innocent, humanoid robot Zeta (voiced by Diedrich Bader), finds he can no longer carry out assassinations and goes on the run from government agents in this animated spinoff of "Batman Beyond." Aided by teenage orphan Ro Rowen (Julie Nathanson), Zeta must learn to blend in with humans while trying to prove to his pursuers that he hasn't been reprogrammed by their enemies for nefarious purposes.