The pug who wanted to be a unicorn

"After Peggy the pug puppy is left at the animal shelter just before Christmas, she is taken in by a foster family. But the situation is just temporary...and the little girl, Chloe, wants a unicorn for Christmas, not a puppy. Peggy decides that she will become a unicorn to make Chloe's Christmas wish come true--and hopefully make Peggy's temporary home her forever home in the process. But all of Peggy's attempts to become a unicorn go hilariously wrong"--.