Shen Mo, an ordinary sound engineer burdened by enormous debt, unexpectedly acquires the Echo Collection System. It allows him to collect key fragments of sound left behind in the past at specific places or in particular objects. He had hoped to use this ability to make some quick money, but while recording a celebrity, he accidentally collected a conversation from a voice recorder that had nothing to do with the recording session. It revealed the truth behind a wealthy man’s “accidental” death.
