Kato, 16-year-old, goes on a ski holiday with her half-brother Alex. The two teenagers don't know each other that well, and try to build the first stones to a brother-sister relationship. Soon they realize that they look at each other with very different eyes, and things are more complicated than one would expect. Although she fights it at first, Kato can't ignore the fact that it's not just the ski lift that makes her breathing soar...