Abby is determined to overcome her family's financial limitations and purchase her own rollerblades. Driven by a desire for independence and tired of using hand-me-downs, Abby sets out to earn money through odd jobs. However, she faces the challenge of resisting the temptation to spend her earnings on other things, testing her resolve to stick to her savings plan.

The narrative centers on Abby's relatable goal of acquiring new rollerblades, highlighting her determination to break free from using her sister's worn-out pair. The story explores the common childhood challenge of saving money, as Abby finds her earnings frequently diverted by other desires. This premise suggests a focus on themes of personal responsibility and the discipline required to achieve one's goals. The book likely offers a straightforward, character-driven account of a young person learning a valuable life lesson.