When a fuzzy, mystery-breed puppy named Murphe is left on the shelter steps on the coldest night of the year, he longs for a place to belong. Adopted by a loving family, he hopes his search is over. But with two sleek Boston Terrier brothers—and a yard full of chatty critters teasing him for his floppy ears and mop-like fuzzy fur—Murphe begins to wonder if he is just a "What" who doesn't fit in.

​Tricked by a sneaky fox into running away, Murphe ventures into the dark woods alone. Now, his brothers must risk everything to save him—proving that a real family isn't about matching breeds, but about loving each other just as you are.