The fifth installment in the "Cinderella Story" franchise stars Laura Marano of the Disney Channel series "Austin & Ally" as Kat, an aspiring singer-songwriter working as an elf at a local billionaire's Christmas Tree lot, where she starts to fall for Nick (Gregg Sulkin), the lot's new Santa. But her efforts to attend a prestigious winter gala with Nick are thwarted by her stepfamily.