Chu Han, a former top tactical analyst, was sentenced to death for special reasons. In his first instance of the Abyss Game, "Poison Gas Train," veterans locked the doors and lured monsters into slaughtering the newcomers, leaving them with no way out. Instead of searching for a key, he secretly cracked and altered the train's track code. As the entire group watched in horror, he forcibly separated the carriages, sent the veterans into the Abyssal Nest, and seized control over life and death aboard the entire train.
