The first movie in the "Alien + Man" series tells the story of a sudden day when a spaceship appears over Seoul and fights for the rumored "Divine Sword". The two immortals, Black Tongue and Qingyun, who are searching for the secret of the Divine Sword, as well as the Masked Man Zizo, also join the battle. At this time, the spaceship shines and rises in a deep valley, and the door of time between the people chasing alien prisoners and the Taoist priests fighting for the Divine Sword in 1390 opens, and everything begins to change.