Legend says that whoever possesses the Naga Eye gains immortality and power, but it was stolen centuries ago. If not returned within 500 years, a great disaster will occur. Captain Ratanakorn doesn't believe in this, unlike her archaeologist sister, Dr. Kanjana. When their father is killed over a map to the Naga Eye, they team up to find it, with Atsawin, a former special police officer, guiding their mission.