Granny Goodness realizes that she isn’t going to be able to defeat Supergirl by herself, so she calls upon her Female Furies from Apokolips in order to help her. When Superman learns of this, he goes to help his “cousin”, though he finds himself captures and dragged off to Apokolips. Now, Supergirl must prove her worth as a hero and rescue Superman and save the day, before Earth gets destroyed by a comet that Granny Goodness has sent flying towards Earth.