Mountain friend Cathi Schauer takes on the toughest race of her life: with 106 kilometers and 5,080 meters of altitude, the Zugspitz Ultratrail is THE challenge for anyone who loves trail running. Cathi has never run this high and this far before. How does she prepare for such a challenge? Will she make it to the finish? And will it be her strong will and personal ambition that help her or will it be the “we”, because Cathi is competing with her twin sister and her husband.