Three years in hiding, a dragon waits beneath the abyss.
He is Wu Yu, the Divine Marshal of Jiuzhou and the sole king of the underworld. Yet he willingly casts aside all his glory to marry into the lowest-ranking merchant family in Jiangcheng, becoming a son-in-law everyone can mock.
Serving tea, pouring water, washing clothes, cooking meals. He endures contempt and swallows every humiliation.
Everyone thinks he's useless. Even his stunningly beautiful, icy wife, Yun Xuan, has lost faith in him and urges him day and night to sign the divorce papers.
Until one night, the most prestigious family in eastern Jiangdong arrives with overwhelming force, storms the Yun family's gates, and pressures Yun Xuan to marry someone else, driving the Yun family to the brink of ruin.
He is trampled into the mud. Yun Xuan is seized by the throat, her life hanging by a thread.
He slowly wipes the blood from the corner of his mouth, takes out the phone that has been silent for three years, and calls a long-sealed number. He says just three words:
"I'm back."
That night, Jiangdong is turned upside down.
The Dragon Seal of the Nation's Protector reappears, and nine War God Orders sweep across the land. A million troops cast off their disguises and boldly converge from every corner of the city.
He rises from the dust, revealing the fearsome truth: nine dragons coil around him.
The contempt he once endured, he washes away in blood.
The humiliation he once suffered, he repays with his life.
And his stunningly beautiful, icy wife goes completely mad after that night.
She tears up the divorce papers, clings tightly to his leg, and asks him through her tears:
"How many secrets are you still hiding from me?"
Wu Yu looks down at her, his gaze as deep as an abyss.
"Don't rush," he says softly. "You'll find out soon enough."
"Because there are already too many people who want you dead to count."
The Nine-Dragon Son-in-Law returns, and the world is thrown into chaos.
His legend has only just begun.
"When the novelty wears off, true love begins to emerge. When there's nothing to talk about, that's when love begins to grow. Changing one's mind is instinct, loyalty is a choice. The meaning of love isn't about experiencing old things with new people, but about experiencing new stories with old people.