[Unknown Mechanical Industrial World vs. A Dazzling Journey to Save the World!] [A 4D Sci-Fi Blockbuster for Kids, on the Page! The Year's Great Children's Sci-Fi Adventure Novel Awaits!]
The robot blocks the escape route, so the three of them can only follow Robot V back the way they came, returning to the fork in the road. Jia'er looks at the robot of unknown origin, still shaken, as if it had deliberately chosen this route to lead them all to their deaths. Jia'er is becoming increasingly distrustful of Andy and Robot V, but given their situation, they have no choice but to follow V back and search for an exit.
When they return to the fork, V chooses a path that seems safe, but a series of strange things happen along the way. Faint shadows, sudden cave-ins, and passageways piled high with robot wreckage leave them bewildered. In a dangerous room, Igo nearly loses his life. Andy is astonished by Jia'er's strange behavior.
They race at high speed through a maglev tunnel. In a dark, damp underground city, they even find a strange underground laboratory. What could be inside? This mysterious underground city is home to more than just the warriors who protect it. When danger strikes, how will the friends escape their predicament at last?
Darkness always passes, and the light will surely come.
