Just before the start of a new trek, a Sherpa family discovers that their yaks are missing. Young Kami, anxious to help his brother and father maintain their livelihood, sets off by himself to find the wandering herd. A spunky deaf child who is unable to speak, Kami attempts to summon the yaks with his shrill whistle. Failing to rout them, he hustles up the steep mountainside to search the yaks' favorite grazing spots. On the way he encounters the...