Wati, a domestic helper, is discovered dead in a water tank at the rooftop of a HDB block. The coroner discovers she was pregnant at the time of her death. Spider Ming (Wang Yuqing) becomes the prime suspect of this vicious crime as he had previously threatened to kill Wati and is arrested by Zhijie. He denies killing Wati and mentions that Guixiang is her son, surprising Xiaoyang.
