
When James Gunn first announced this movie, he said it would be based on a well-known story. This means fans will already be familiar with the main plot. The film centers around Supergirl meeting Ruthye during a drunken birthday celebration on a planet with a red sun, as Ruthye seeks a hero to avenge her father’s death. It will also delve into Kara Zor-El’s ongoing emotional struggles from witnessing Krypton’s destruction, something hinted at in the released teaser. However, the movie isn’t a direct copy of the comic book. For instance, the character Lobo wasn’t part of the original story, so his role is currently unknown. The surprise cameo of Superman in Supergirl was likely intended to be a similar reveal, and while Milly Alcock accidentally spoiled it, that might actually help build excitement for the movie.