Whitaker Ringwald

"On her twelfth birthday, Jax Malone receives an odd, unopenable present from an estranged aunt. When Jax and her cousins Ethan and Tyler go on a quest to open the box, they uncover a mystery with magical consequences"--

Epimetheus wants to control the magical urns that used to belong to Pandora's daughter, and Jax, Ethan, and Tyler's only chance to fight him is a secret weapon--and to realize their family ties are stronger than any magic.