In her childhood, due to a momentary lapse in attention, Jiameng had her younger sister abducted by human traffickers, starting her long journey of searching for her family. Years later, Jiameng meets Lin Han, a reporter who quit his job to go deep undercover within a criminal syndicate for investigation, and unexpectedly discovers that her sister is trapped within this gang. The two join forces to launch a rescue operation in the perilous dark den, and ultimately rely on courage and wisdom to successfully rescue the sister and wipe out the criminal syndicate in one fell swoop.