Supergirl [Linda Danvers]; Super-Horse [Comet] (brief origin); Superman [Clark Kent]; Liz Gaynor; Edna Danvers; Fred Danvers; Matt Carver; Biron (flashback); Circe (flashback)
Synopsis
Supergirl thinks that Comet prefers movie star Liz Gaynor, his co-star in a new adventure film, but Superman discovers that Comet now has amnesia and doesn't remember Supergirl, or even that he has super-powers.