Lost on a rainy night, the orphan girl Su Luoli strayed into the thousand-year-old castle deep in the Evernight Forest to avoid pursuit. She touched the sealed portrait, and blood soaked into the painting. The vampire Duke Cain Velen, who had been sleeping for 1,200 years, woke up.
The moment the silver-haired and golden-eyed Lord Yongye smelled her blood, ripples appeared for the first time in the heart lake that had not seen waves for thousands of years - she possesses the holy blood of the stars that has been extinct for thousands of years, and is the only existence in the world that can make him lose control.
"Stay and be my blood slave."
The gate of the castle suddenly closed, and the mark of the blood contract appeared on the palm. Souls were bound, emotions were shared, and pain symbiotically coexisted. She was imprisoned in this Gothic castle hanging above the abyss, becoming the only exception in his thousand-year loneliness. She escaped again and again, and he caught her again and again, but he always stood in front of her when crisis struck.
She gradually discovered that all this was no accident. The church's sacrificial plan, the ancient darkness sealed underground, the fiancée who betrayed him thousands of years ago - all clues point to the same truth: she is the chosen sacrifice, and he is the only person standing between her and the altar.
From fearful temptation to two-way redemption, the tyrant who has been lonely for thousands of years and the only girl who can touch his soul make a life-or-death promise of eternal life in a fateful chess game.