Japanese diva Juliet unexpectedly finds a photo of her parents taken by a certain spiritual lake after her mother’s passing. To fulfill her mother’s wish, she embarks on a journey to reminisce about her mother’s roots in Taiwan. Juliet enlists her old friend to help her team up the mountain and they encounter supernatural phenomena and become trapped in thick fog. However, the true horror awaits as Juliet’s hidden secrets unwittingly attract evil spirits…

The tribal village gets misty in September, letting out an atmosphere as intriguing as Hayung's family in this autumn-winter season. After Hayung's homeland was occupied, one 80-year-old man devoted his whole life to worshipping GAGA. The traditions were forgotten by his descendants after his passing... The Hayung's family represented indigenous families in Taiwan. Each tribe represents a withering big family. The eldest son Pasang joins in the election campaign, neglecting the opposition from his family. The second son, who is a farmer, is thus affected. After the election campaign, the entire family is on the verge of falling apart, and the village witnesses the snow for the first time in a very long time... With snow melting, new lives emerge. The broken family has started mending and repairing...