"Mode II" is an app that can give its users certain superpowers. One day, a frail-looking high school student named Ye Qiu accidentally accepts an invitation to test this app and gains the ability to hear people's inner thoughts and feelings. After his sister Ye Zi is assaulted and gravely wounded by a serial killer, Ye Qiu becomes determined to find out who the culprit is using his newfound power from "Mode II". However, little does he know that he's not the only one with this ability...