Fifty years ago, young Yang Qingshan, Bai Ju and Fang Dan, with the ideal of revolution, joined the Baishan Blackwater in the Great Northern Wilderness. However, an accident happened to be a turning point in the fate of these young people. Their lives changed accordingly. Yang Qingshan left the northeast with a pain. Forty years later, when he once again met the white chrysanthemums left in the black land, the dusty past once again came to his mind. Memories and reality interweave the complex relationship between human destiny and the times