The story is based on ghosts of the folklore of Thailand, who in this movie shed their sinister reputation and are the heroes.

Nak's striking fuchsia-colored hair and eyes in this movie are a departure from her alleged looks in traditional lore though.

Ghosts from other backgrounds such as Phi Yipun, the scary woman with long, stringy black hair wearing a white gown, a well-known vengeful ghost (onryō) from Japanese horror films based on the Yotsuya Kaidan story, also have a role in the Nak movie.

Led by Nak and her friends, the ghosts of Thai popular tradition fight against a powerful evil spirit that threatens mankind.

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