In 1930, the Party Committee of Mianyang County of Hubei Province strategically withdraws the Red Guards from Pengjiadun in accordance with the military action of the Red Army. Peng Batian, a local bully and the boss of the Baiji Society, together with the Vigilance Group of Kuomintang, take advantage of the departure of the Red Guards to raid the area. Led by Party secretary Han Ying and Captain Liu Chuang, the Red Guards take pains to fight the enemy. Unfortunately, Wang Jinbiao becomes a traitor and Han Ying is put into prison. Han Ying remains loyal to the Party no matter how the enemy tortures, coerces, or tries to bribe her. Eventually, the Red Guards led by the Party and supported by the villagers, fight back resolutely and reclaim the control of Pengjiadun. Peng Batian is shot dead; his gang and the Vigilance Group are destroyed. The red flag is once more seen fluttering above the Honghu Lake.