Watch VoirFilms. In the 1980s, Hu Bayi, Shirley Yang, and Wang Kaixuan’s close friend, Big Gold Tooth, travels to Wu Gorge in Sichuan to collect antiques. However, upon his return, Tooth mysteriously falls victim to poisoning. To save him, the trio embarks on a journey to Wu Gorge in search of an antidote. But what they don’t expect is to become entangled in a dark murder conspiracy, plunging them into yet another perilous and uncharted adventure.