The story follows an timid woman named Jenny, who gets an unexpected job offer, that being a member of a notorious supervillain crew. Now Jenny has no choice but to assume a new identity (aka Rookie) and to adapt into the supervillain life style. However, a jaded and forgotten superhero named Light-Speed has gone mad and threatens to destroy the whole city. Will Jenny be able to defeat this rejected hero while also adapting to her supervillain life and team?
