"Actually it's two movies! This "Part 1" will be out in July in Korea, though no US date is set yet. During the Goryeo Dynasty (918-1392), Taoists try to take a mysterious holy sword. Meanwhile in present day (in 2022), aliens appear on Earth. A time door soon connects the late Goryeo period and the present day. The two parties cross paths when a time-traveling portal opens, causing chaos and confusion."