In episode one, Ginrei's dress is stolen, only to be used to fool the enemy. The second episode deals with a giant robot made exactly in her image. Finally, the third episode concerns Tetsugyu and Ginrei investigating a lost research team in a "wild west" desert setting.

Valkyries—legendary female warriors from the land of gods, Asgard—are sent by Odin to protect Earth against the growing threat of demons. To overcome these threats, nine valkyries under the guise of the Saotome sisters will have to level up by performing a variety of romantic acts with their official lover, Einherjar. Meanwhile, the socially anxious Takuma Akutsu learns that Odin has chosen him as the valkyries' lover. Despite his utter horror, however, he agrees to let the sisters stay in his big yet empty house to help them in their war against demons. With nine beautiful women sharing his roof, will Takuma manage to prevail over his fear of society and become someone worthy of saving the world? [Written by MAL Rewrite]

1663 Common Era, the youngest leader of the Ming dynasty's navy Lu Changfeng is to escort an official to capture criminals but was attacked by a ghost fleet and sea beasts, causing the entire envoy to be sunk. Lu Changfeng was saved by a mysterious girl from the ocean bottom and followed her to the international center of commerce of the Age of Sail: Luzon. At the time, over 70% of the Ming dynasty's silver was obtained from Luzon, and this tiny island determined the fate of several nations. Spanish settlers cruelly ruled, and people of all walks of life, under the guidance of Song Yingxing, constructed the international finance center: the Kingdom of Wan. Despite disagreements with Song Yingxing, Lu Changfeng still chose to join Song's team: 天工, participating in the struggle against Spanish settlers with others. Both factions used bleeding-edge technological inventions in their battle. To resist the enemy genius Vesalius‘s weapon, Song Yingxing manipulates Lu Changfeng, bringing out his days fighting Vesalius in Korea, etc. (Source: medium.com)

Year 2124, Christopher is on research expedition on Mars but he discover a missing commercial vessel...