The story begins with healing others and ends with healing yourself. The heroine Lin Huisheng uses "echo tuning" technology to repair the spaces in the city that have been contaminated by emotional trauma. A seemingly ordinary commission led her to the dusty past of her family - the old seaside house "Guanchao Residence". As the investigation deepens, she discovers that her mother's early death, her father's autism, and even the root of her choice of this career are closely linked to a tragedy that happened thirty years ago that was carefully covered up. She must uncover the truth and complete the most complete reconciliation to her family and herself before the out-of-control "malicious echo" causes a real-life disaster.
