Geraldine is an energetic, spirited second-grader with dreams of becoming an astronaut. She knows that she's clever and inventive, but can she create the winning entry in her class science contest? Armed with nothing but her strong will and the broken parts of her parents' old gadgets and gizmos, she sets out to invent an amazing contraption. Will her invention wow her classmates and transform her from class troublemaker to creative scientist?