Watch UFO Ultramaiden Valkyrie 2: December Nocturne Online

Raine and Chorus get a house on Earth, the last three Valhalla princesses each have a story to tell, and finally when Kazuto and Valkyrie manage to stay in their adult form, they try to marry again.

Valkyrie, Kazuto, Akina, Hydra and friends are back for more when the Key of Time suddenly appears along with many other mysterious happenings. All seemed to be linked to a person named Valkyrie Ghost whose only goal is stealing Kazuto for herself. As they team up against this seemingly unbeatable foe they dig deeper into the mysterious past of Valkyrie's home planet, Valhalla.

A princess from outer space accidentally crashes on Earth, where Kazuto desperately tries to maintain the public bath of his grandfather. Due to circumstances, Kazuto receives part of princess Valkyrie's soul which forces her to stay there with him. But that is not the only problem... because her soul lost strength, the 18-year-old princess transforms both mentally and physically into a 8-year-old little kid.