Filmmaker Hu Jie uncovers the tragic story of a teacher beaten to death by her students during the Cultural Revoution. In 1966, the Cultural Revolution exploded throughout China, as Mao's Red Guards persecuted suspected Rightists. Bian Zhongyun, the vice principal of a prestigious school in Beijing, was beaten to death by her own students, becoming one of the first victims of the revolutionary violence that would engulf the entire nation.