As the intro for Zoids: Chaotic century goes, or is similar to:
"In the far reaches of the Universe there exists the planet Zi. This planet is not only inhabited by humans, but also, mechanical life forms called Zoids. Sadly a peaceful existence is not the case. There is continued unrest between the Republican and Imperial forces...each trying to overthrow the other using the strength of their Zoids as combat weapons."
Basically, your mechanized giant animalistic weapons based off of the old Zoids toys. Fun, right? The "New" series, Chaotic Century, is actually the first series in the group of three. . . as far as I know of. It, as well as it's sequel, Guardian force, are basically the only ones with storylines. The third season, with Bit Cloud, is probably the worst thrown together of them all, plotwise, but if you wanna know something, uhr. . . go here : Linkwww.angelfire.com
Even I'm in the dark about most of what ends it out, but needless to say, short of the occasional spelling error in names, or just forgetting someones name(There's sooo many characters -_-;). . . I'll get it fixed within a day or so.