On the remote Tibetan Plateau, Old Zhaxi, a herdsman, relies on a white yak that once saved his younger son and carries the memories of his late wife and eldest child. Now grown and yearning for a new life in the city, his son Gongbu decides to sell the yak, hoping to bring his father along. But the plan ignites a fierce confrontation. As the son insists on parting with the yak, father and son clash in the tension between tradition and modernity, between staying and seeking change. The enduring bond with the yak becomes a thread that tugs at their shared attachment to home and the widening rift of their era.