When the convenience store mirror cracked for the first time, when the national emblem on the coins turned into closed eyes, Chen Mo's world began to collapse between reality and weirdness. He thought he was just involved in a "mirror game", but he didn't know that behind every text message with anonymous rules, there was locked the unsolved case of the disappearance of Yuhong Elementary School ten years ago - seven children painted with shadows, but their souls were trapped in the frame, and the reflection in the mirror was holding a blood-stained paintbrush, waiting to become the last piece of the "Seventh Paradox" puzzle.
With the weird smile of his roommate Lin Xiaoman and the mysterious appearance of Lu Chen, the attending physician at the mental hospital, Chen Mo was forced to shuttle between the "world in the painting" and the "cage of reality": the convenience store surveillance recorded him talking to the air, the closet in the shared house was filled with blood-red children's clothes, and the end of all the rules pointed to a shocking truth - he thought he was the game-breaker, but he was already the "prisoner in the painting" written by his consciousness in the mirror.
When the red paintbrush pierces the canvas, when the counterclockwise clock points to three o'clock, Chen Mo must tear apart the disguise of memory in the backlash of the rules: Is Lu Chen a guardian or a manipulator? Is the red paintbrush left by Su Xiaoxiao a redemption or a deeper trap? In the abyss where mirror images intersect with reality, every touch to the rules may turn him into "paint that cannot be erased" forever, and the ultimate answer to the seventh paradox is hidden in his own cracked reflection——
"When the person in the painting awakens into the frame, whose hand is holding the pen?"
