Three drivers on the last bus of Route 13 have mysteriously fallen into Tangwa Reservoir, giving rise to rumors of hauntings. New driver Li Yao takes over the route and repeatedly encounters strange happenings, from a black dog to an old woman carrying a basket. Following clues connected to the bus and a haunted house on Huaiyuan Road, he discovers a vast conspiracy hidden beneath the supernatural appearances. Li Yao pierces the fog of human motives, exposes the whole truth, and saves the villagers of Tangwa and Huyao.
