Shen Niangxue is kind-hearted and steadfast in upholding righteousness, yet she is framed by others and dies unjustly. With her sincere heart, she awakens the Heavenly Dao's Drum of Grievances and demands justice for the Three Realms, only to face an unfair trial. After falling into the Infernal Hell, she meets Zhu Jiuyuan, an ancient Zhulong dragon trapped there. United by their commitment to justice, they join forces to expose the hypocritical truth behind the Immortal Realm's theft of fortune and oppression of all living beings. With fearless courage, Shen Niangxue shatters illusions, establishes fair laws anew for the Three Realms, and safeguards peace for all, embodying the positive spirit of standing by justice and refusing to bow to tyranny.