I have only seen the first few episodes of this anime so here goes.. I noticed that it was more or less a military/mech anime. Tokyo developed a mech that owns the United States basically, it kicks the butt of any machine they own! They release a team of them to test out how well they handle, and they crushed the U.S. easily, these mechs are far greater then any tank.. Anyway for some reason they were performing a ritual with this guy dancing and they were trying to get a lot of energy from it, but they were unsuccessful in all attempts. Anyway a group from the U.S. is sent to an old site that is owned by the japanese, and they are suppost to take it over. Anyway the guy that was doing the ritual runs out and starts performing it again. A sniper then shoots him in the head, but luckily he had a helmet on. Then after that the new butt-kicking mechs are sent in and they begin battling with the U.S. variant mechs.. thats all I got from the first few episodes.. really confused me. Could be wrong on some of the information but I think it's mostly right. If you like military/mech animes this is for you possibly.. with a few strange dance rituals thrown in!