Lin Fan, an ordinary employee, accidentally awakened the ability to "hear the echo of objects" when he was suppressed by his boss and on the verge of collapse. Starting from a talking computer, he heard the forgotten truth: his boss tampered with data and plagiarized ideas... He used this ability to expose darkness and fight back against injustice. In the process of clearing the grievances of his colleague Su Wan, he gradually understood that every item carries memories and emotions. He is no longer just a victim, but decides to become the listener and guardian of all things.