Bizarre crises have broken out one after another in Binhai City, with ferris wheel explosions, power outages in many places, and bomb threats... Lin Yu, a former special soldier, led a team of hackers, criminal police, and mercenaries to follow the clues of the snake-shaped mark and break into the heart of the conspiracy... They fought fiercely with the enemy in the underground maze, cracked the code during the countdown, and a life and death race related to the survival of the city began.