Five years have passed since the Battle of Asgard. Under the domination of the Golden Viper and the "Eastern Alliance", the world maintains a false and fragile peace. In order to revive Heya and return to Shangdu, Rui tries to find the clues to the "Holy Ark" that has been monopolized by the Golden Viper Group. However, a mysterious organization closely related to the Type II civilization, the "Dusk Messenger", has already set its sights on the Holy Ark and Rui...