Mystery! The Abominable Snowman!?

Synopsis

Burton and the others have come to a snowy-mountain camp under the pretext of grueling training in extreme cold. While everyone enjoys skiing and snowboarding, Ron, Van, and Kappei spot a giant shadow. According to the lodge's owner, sightings of the "abominable snowman" have been piling up around here lately. To uncover its identity, they follow the footprints deep into the forest — and what they see there is…!?