The former police hall searched a class of Interpol Takakura (Xiujun Nishima) and became a professor of criminal psychology in a university after an accident. Not long ago, he and his wife Kangzi (acted the role of Takeuchi) moved to their new home. However, the neighbors around the new home seem to be too indifferent, especially the man surnamed Nisano (Kagawa is acted the role of), who always feels that he is thousands of miles away. Of course, soon after, Nisano showed their friendly side to the Takakura couple, which made Kangzi, who had little communication with others, quite gratified. At the same time, Takakura and his old colleague Nomami (East Changda is acted the role of) launch an investigation into the disappearance of three people. As they went deeper and deeper, they discovered shocking facts. Darkness kept engulfing those who tried to get close to it. Takura looked back and was surprised to realize that since he moved to his new home, he had unwittingly fallen into a death trap carefully set by greedy ant lions. This film is based on the original work of the same name by Maegawa Yu.