While enjoying a wave of popularity and academic success, Supergirl is suddenly accused of committing several pranks and suspended from school for a week. These acts remind her of her time at a previous high school, when she was blamed for destroying the gym and expelled even though she insisted she had been framed. Public opinion quickly turns against her in light of a worldwide vandalism spree; while investigating in Egypt, Supergirl and Batgirl find the real perpetrator - a Bizarrocounterpart of Supergirl. During a call to Clark Kent, Supergirl realizes that Bizarro must have destroyed the gym. The two face off in Metropolis, with the public blaming Supergirl for the damage she is causing. Finally fed up with taking the blame for things she has not done, Supergirl unleashes all her power against Bizarro, who retaliates in kind. Their attacks are evenly matched and leave them exhausted, and Bizarro tearfully admits that she has only been trying to be a better villain than her world's Superman and draw attention to herself. Supergirl consoles her, seeing the parallel between them, and Batgirl ensures that both of them get a front-page headline to restore their reputations.
The opening sequence of this episode is similar to that of "Super Who?," with the Superman ads replaced with Supergirl ads.
This is the first and only episode to air on Canadian television channel, Teletoon instead of SVOD service, STACKTV.
The title of this episode is a reference to the 1966 Spaghetti Western film The Good, the Bad and the Ugly.
As the episode begins, it's mentioned on the news that Supergirl saved Metropolis yesterday by trouncing a squad of space invaders who attempted to enslave the citizens, fact that occurred in "DC Super Hero Boys". This reveals that this episode picks up one day after the aforementioned episode.
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