In 1350, a boy with a large hump on his back becomes the servant of a shadowy pilgrim on his way to Rome, who pulls the boy into a dangerous expedition across Europe to gather the seven precious relics of Saint Peter.

Student council is keeping Martina busy with a bake sale and cupcake-savvy Bev is excited to help out. The girls advertise their delicious creations and are thrilled to be invited to participate in a web show baking contest. Can Martina balance school and a ruthless cupcake competition, all while keeping her stickers in check? Or is this a recipe for disaster?