Dangaizer 3

When four psychic warriors discover that evil invaders have destroyed their planets, they are brought together by a mysterious doctor to unite to form Dangaioh, the most powerful weapon in the universe. Using their full collective cyonic powers, they alone can stop the bloody tyranny of Captain Garimoth and his wicked henchman to prevent the end of the universe.

A mysterious explosion on Futagami Island begins a new chapter in the Dangaioh mythos! Led by the evil Professor Katou, a band of warriors calling themselves the "Tartarus Knights" have begun their campaign to lay waste to the world by way of a small research station on Futagami Island. Katou`s victory seems almost certain until he encounters an advanced fortress guarding the island. From it, a group of three humanoid robots are launched - Dangaioh!

Touno Hikari is learning to pilot robots at a training facility. While she cannot do anything right, her instructors are interested in her for some reason. As the students learn to pilot the robots, they become suspicious of the goal of the training facility. Marie Vlaanderen transfers into the facility, and her instructor says that Marie has been training for all of her life and has the best chance of awakening "it".

Ken, Joe, and Akira, three high school students, must combine their three mecha into Gekiganger III to defeat the evil Prince Akara and Emperor Hyperion. The OAV is a compilation of the scenes from Nadesico, a new "movie", and is a parody of many mecha series from the 80s.