Architect Wen Wan took over the old renovation project in the south of the city. When demolishing an abandoned factory building, he discovered something suspicious about the fire that was classified as an "accident" ten years ago - there was a door hidden in the burned wall that should not have existed.
Her father, who owned the factory at the time, also died in the fire. Everyone said it was an accident, including herself. Until that door appears.
Fire investigator Lu Chen was sent to assist in the safety assessment of the old renovation. He is calm and professional, but he keeps secrets about old cases from ten years ago. Wen Wan discovered that his name appeared in the call records of his father's last phone call before his death.
She thought he was an accomplice in covering up the truth, and pressed on her step by step; but he remained silent, only standing in front of her when she was in the most danger.
When the secrets behind the door were opened little by little, Wen Wan realized that some fires were not for destruction, but for protection. And the person she had misunderstood for ten years had been waiting for her to come out on her own since the day the fire happened.
Intention: The truth may be late, but love and justice will not be absent.