It is time to celebrate Grandma's birthday, and both siblings want to make her the perfect cake. Ruby is carefully baking an elegant angel surprise cake topped with raspberry fluff icing. Meanwhile, Max is busy creating an earthworm cake decorated with red hot marshmallow squirters. Every time Max knocks ingredients on the floor, Ruby sends him to the grocery store with a shopping list. But the grocer cannot read Max's scribbled handwriting. You will find yourself smiling as Max learns how to draw pictures so the grocer understands exactly what he needs. It is an incredibly charming and relatable story about kitchen chaos, teamwork, and the funny ways brothers and sisters show they care.