Since ancient times, the citizens of Slantania have lived within a shroud of miasma, a force that brings forth monsters creating havoc around the world. When the kingdom's Order of Knights becomes incapable of containing the monsters, the Grand Magus summons a holy maiden—the legendary Saint—to obliterate the horrid creatures and restore peace. One evening, as Sei Takanashi returns home from a long day at work, a magical force pulls her into a foreign world. Upon her arrival to the kingdom of Slantania, she overhears that the Grand Magus inadvertently summoned two Saints—Sei and a brown-haired girl. Needing only one holy maiden, the prince declares the other girl as the Saint, leaving Sei to her own devices. Sei sets her sight on the Medicinal Flora Research Institute, an establishment known for its studies regarding herbs and potions. While indulging in her latest passion, Sei has a fateful encounter with the commander of the Third Order of Knights. But little does she know, her aptitude as a Saint will continue to exert its influence over her new life.

Cool-headed and rational, Koujirou Shindou is a government official and master negotiator with a well-earned reputation. While departing on a business trip, a giant cube materializes and his plane is taken undamaged into the mysterious, indestructible structure. As Japanese authorities attempt to identify the cube's properties and origins, Shindou encounters an otherworldly entity known as Yaha-kui zaShunina, who materializes in the form of a human man. He assures Shindou that the passengers are not in any danger and requests help in negotiations with the human world. Hailing from a higher dimensional universe known as Novo, Yaha-kui zaShunina is able to transfer information between Novo and Shindou's universe through a cube called Kado. Despite having these unfathomable abilities, he does not appear hostile. Instead, he announces that he has come to this world with only one intention: to advance humanity—starting with Japan.

Take the characters from a number of sci-fi based animes, a stage not unlike Wacky Races, super deformed madness, and general insanity and what you get is Scramble Wars. While Scramble Wars does include characters from the original Bubblegum Crisis, Gall Force and Genesis Survivor Gaiarth, it also has a few other characters from other animes such as AD Police and Riding Bean. It doesn't matter if you loved or hated any of these series, as long as you've seen at least one of them you'll have a great time watching this, though the insanity is so generic that it really doesn't matter if you haven't seen any of the animes featured in Scramble Wars. Wacky Races! No not really, but close enough. Genom is holding a race; the winner will receive the Genom Trophy! Woohoo! Yay! Enter, Priss on her Motoroid, Linna and Nene, Sylia and Mackie, a Boomer... A Boomer?... okay... and characters from other animes already mentioned a million times. All will be racing against each other to win this prestigious trophy for some reason. And all of them will do anything to win it... (Source: AniDB)

A Romance of the Three Kingdoms retelling using SD Gundams.