The rulebook indicates that the third game involves guarding seven energy towers. The first tower rises in a neighborhood park, with a giant mechanical eye suspended from the top. Xiao Man's electronic ripples resonate with the tower, and the park's fountain is suddenly activated, the water stream condensing into a mechanical shark.
Chu Yun weaves a protective net with metal vines, and Dr. Shen deploys an antidote spray at the base of the tower. Su Wanqing discovers that the mecha can absorb the tower's energy, but each recharge accelerates the spread of the electronic pattern. Lu Li's silhouette appeared at the top of the tower and pointed his sword to the east, "The second tower is at the Yangtze River Bridge."
The team split up: Chu Yun stayed behind to guard the community tower, and mother and daughter Su Wanqing rushed to the river tower. The Yangtze River Bridge had turned into a mechanical python, each snake scale was a miniature energy tower. When Xiaoman interferes with the snake's eyes with the electronic pattern, the bridge abutment extends its metal tentacles and swirls her into the bottom of the river.
Dr. Shen remotely controls a swarm of drones to airdrop neutralization bombs, and the gaping hole reveals the core chip. Su Wanqing dives to the bottom of the river and realizes that her daughter is being wrapped into a cocoon by the electronic pattern, and the coordinates of the third tower appear on the surface of the cocoon shell.
Xiaoman experiences a time jump within the cocoon and sees images of her future commanding a mechanical army. When she rejects the kill command, the cocoon shell cracks and the electronic pattern evolves into a defense mode. The Yangtze Mechanical Python suddenly turns around and attacks the other energy towers to buy time for the team.
Chu Yun installs a jammer on top of the community tower, and metal vines grow wildly down the tower, blooming buds that release antidotes. Dr. Shen cracks the tower's database and downloads a map of the global distribution of energy towers.
Three energy towers were broken in seven days, and the Mechanical Beast's attack was suspended. Xiao Man's electronic pattern turns to a light golden color, capable of purifying polluted water sources. Su Wanqing found the countdown to the third game in the mech bay: 700 days. Lu Li's silhouette became clearer and clearer, leaving behind half a broken sword before disappearing.
When the community holds a celebration banquet, Xiao Man transforms the mechanical shark into a fountain decoration. Chu Yun builds a mobile fortress at the auto body shop, and Dr. Shen begins training residents in the use of improvised protective equipment. A meteor shower streaks across the night sky, each meteorite carrying a metallic luster.