Every few hundred years, the most powerful demon on earth—a snake demon—awakens, and the Yin-Yang Masters are summoned to the capital. Meanwhile, the Princess of the realm has her own plans, as she conspires to claim the demon’s power.

In the Liu Song dynasty, Chancellor Liu Yikang seeks to reform a corrupt government by marrying Shen Lige, a woman from a powerful military family. As they fight to implement change, political rivals strike back, leading to the downfall of the Shen family. Driven by grief and vengeance, Shen Lige rises to challenge the forces that destroyed her world.

Former rebel Song Chen, inspired by his mentor, becomes a teacher dedicated to helping students overcome their struggles. Partnered with the spirited but reluctant Tan Shutong, he faces the challenges of teaching while bridging generational divides. Together with their students and peers, they embark on a journey of growth, questioning what it truly means to become the adults they hope to be.

In the Liu Song dynasty, Chancellor Liu Yikang seeks to reform a corrupt government by marrying Shen Lige, a woman from a powerful military family. As they fight to implement change, political rivals strike back, leading to the downfall of the Shen family. Driven by grief and vengeance, Shen Lige rises to challenge the forces that destroyed her world.

Every few hundred years, the most powerful demon on earth—a snake demon—awakens, and the Yin-Yang Masters are summoned to the capital. Meanwhile, the Princess of the realm has her own plans, as she conspires to claim the demon’s power.