Ronan (Tsai Hsuan-yen) had spent time recovering in a mental institution and was now ready to be reunited with her daughter Dodo (Huang Sin-ting), who had been raised in a foster house run by Ming (Kao Ying-hsuan). However, when Dodo was with Ronan, she began to act bizarrely and "see" invisible entities called "baddies".
Ronan realized that these paranormal phenomena were related to events six years ago. She tagged along with her boyfriend Dom (Sean Lin) and his cousin Yuan (RQ) when the two returned to their village for some mystic family rituals. They began filming the proceedings for their YouTube channel, thus violating religious taboos.
Director Kevin Ko used the "found footage" style (mainly home videos and security cameras) to tell his unsettling story, going back and forth in time. The involvement of a cute child in mortal danger makes things more stressful. Ronan breaking the fourth wall to involve her audience to join her to chant "Hou-ho-xiu-yi, si-sei-wu-ma" added more creeps. The cursed video taken within cursed tomb made for a grand finale.