Lin Wan, an ordinary girl, is haunted by an endless strange dream. There was no skylight in the dream, only boundless gray fog. In the fog sat a young man named Ada with a scar on his forehead. With a chain around his neck and eyes like obsidian, he was denounced as a dragon that brought disaster, trapped in the cracks of dreams, waiting for someone who was not afraid of him. Whenever Lin Wan tried to get closer, a deafening roar would be heard from deep in the mist, and a ferocious black shadow would break through the chaos. It was the nightmare born of Ada, the Dragon Nightmare. It fed on dreams, used memories as nourishment, and vowed to devour all intruders.
When she woke up from the dream, a text message from a blank number broke the tranquility of reality, guiding her to dig out a silvery reverse scale under a century-old locust tree. In the middle of the night, with the shadows of the trees dancing, the young man who only existed in dreams came walking in the shadows. The chains around his wrists were rusty, just like in the dream.
It turns out that Ada is a descendant of the trapped dragon clan, the dragon nightmare was transformed by his sealed rage, and Lin Wan is the only person who can look directly at him and not be intimidated by the dragon nightmare. Dragon Nightmare broke free from the shackles of the dream together with Ada, pressing forward step by step, trying to completely devour Lin Wan's soul.
A chase begins that spans dreams and reality. The girl holding the reverse scale and the dragon boy wearing the shackles will join hands to fight against the giant beast from the nightmare abyss. Their bond was quietly forged at the moment when the scales fell into pieces, love and hate were intertwined, fate and struggle went hand in hand. No one knew what the outcome of this entanglement between people and dragons in different ways would be.
