Tushan Honghong, a fox spirit from the righteous Tushan Fox Clan, saves Dongfang Yuechu, a human youth pursued by his lifelong enemy, by chance. As they spend time together in Tushan, a bond gradually forms between them. Ultimately, they join forces with their loved ones to combat the forces of evil in order to fulfill their shared desire for peace between their two clans.

The film is based on the secret line of communication established by the Red Fourth Front Army and the Kuomintang leftist generals in May 1933. It tells the story of the patriotic general Yang Hucheng who sent a special envoy Feng Zhi to the headquarters of the Red Fourth Front Army in northern Sichuan