Kai absorbed an extremely powerful "Core Echo" in an accident. This echo revealed that the "Great Silence" was not a natural disaster, but a man-made conspiracy. This move made him a top target of the Silent Council and Valerius the Purifier. In order to survive and uncover the truth, Kai, with the help of the smuggler Ila, is forced to escape the Silent Zone and travel through the dangerous wasteland in search of the legendary "Zero Point Miracle" that is not affected by the Law of Sound. During the journey, he continued to learn to control his unique ability to absorb echoes, established a deep bond with Ila, and gradually uncovered the shocking secrets hidden behind the Council.