The Battle of the Wedding Chapel in the Sky
Nesty recovers the Mural of the Legendary Princess in honor of Valkyrie’s wedding, but the ceremony is disrupted when space pirates try to steal the priceless artifact!
Aired 25/10/2005EP 6 - The Battle of the Wedding Chapel in the Sky
2005
UFO Ultramaiden Valkyrie 3: Bride of Celestial Souls' Day
The third season doesn`t have a particular story behind everything (like "Valkyrie Ghost" in the second season). It just tells 6 stories about the life of Kazuto & Co. with some additions: Raine and Chorus get a house on earth, the last three Valhalla princesses each get an episode, and in the last episode Kazuto and Valkyrie, who in the same episode managed to stay adult, >try< to marry again.
(Source: Anime News Network)