Shaoyu and Yue-er put on protective scarfs and go through the poisonous air. They run into Heiqilin but survive by playing dead. Tianming climbs across the cliff to Ge Nie's window, Ge Nie wonders why he is not affected by the gas. Ge Nie tells him to climb to the corridor about 110 metres away. Tianming is frightened. Duanmu Rong finds Shaoyu and Yue-er, they go to Ge Nie and they're unable to set him free. Tianming has a hard time over the cliff, and is almost killed by the trap beside the corridor, but Shaoyu saves him by resisting the machine with his hands. Tianming now understands Ge Nie's words, and yells to tell him to take care.
机关城内迎来三百年来最大的一次浩劫，迅速扩散的毒性令整个机关城陷入危机中。少羽和高月前去寻找天明，却在途中遇到了潜入机关城的敌人，危急时刻，幸好端木蓉及时赶来帮助他们。另一方面，天明从自己房间逃出，盖聂告诉他，要靠自己的力量度过危险，于是天明在盖聂的指导下，沿着藤蔓爬过悬崖峭壁。
