Lady Dzhuelina gives Ruby a magic box,so she gathered in her magical gems. To perform a task, it is necessary to Ruby parallel study at the Academy of Gems and open a coffee shop called «Jewelpet». Unfortunately, the cafe requires a lot of work into it and nobody goes. Once Ruby meets three schoolgirls - Tiara Tsukikage, Nene and Konoe Ruruku Hanayamu,- Who decide to help her. Together, they will promote the store and protect against thieves magic box.