Once Upon a Snowman

Taking place during Frozen, "Once Upon a Snowman" offers viewers a look at Olaf's (Josh Gad) first few moments of life. Shoehorning the character different spots of existing archival footage taken from the film, the short places the living snowman on a parallel path to Anna (Kristen Bell) and Kristoff (Jonathan Groff) searching for Elsa (Idina Menzel). With plenty of callbacks to Frozen, Once Upon a Snowman is fun but doesn't offer much in the way of surprises, other than explain where Olaf's fascination with summer comes from, and is more of an odd curiosity than anything else.