Upon learning of Bizarro 's whereabouts , Superboy goes to confront him while Prof. Peterson works on duplicating the kryptonite .
Meanwhile , Superboy is saved from the kryptonite by Andy , and he and the professor determine that Bizarro will only be affected by Bizarro kryptonite .
Upon learning of Bizarro 's whereabouts , Superboy goes to confront Superboy while Prof. Peterson works on duplicating the kryptonite .
Meanwhile , Superboy is saved from the kryptonite by Andy , and he and the professor determine that Bizarro will only be affected by Bizarro kryptonite .