Hannah Dunbar finds herself wondering what would have been had she stayed with the love of her life, Ben, 10 years before. When Santa Claus hears her talking he takes it as a Christmas wish and he transports Hannah to a version of her life where she and Ben started a family. Hannah, who literally becomes a mother overnight, navigates the comical day-to-day challenges of life in the suburbs with Ben and their daughters Caitlin and Hailie.

When a small-town boy's video Promposal goes viral, it scores him a Prom date with his celebrity crush. Complications arise when the celebrity falls for the boy's teacher.