Two teenage brothers venture out on a daring late night escapade on the surface of a frozen ocean. The local colony kids are all genetically ‘modded’ like younger brother Fletcher and they are skeptical of the older brother Sedgewick’s ability to physically keep up with the rest of them, but when the frost whales start to break through the ice and Fletcher hurts his leg, Sedgewick has to be the one to step up and get them both to safety.