The 300 Spartans along with King Leonides were killed at the battle of Thermopylae as one last Spartan known as (Y/N) draws his final breath and dies along side his fellow Spartans but then he ends up waking up in another world called Remnant. ( DISCLAIMER I DO NOT OWN THE MOVIE 300 AND RWBY, I DO NOT OWN VIDEOS, PICTURES, AND MUSIC I WILL BE PUTTING ON HERE THEY ALL BELONG TO THEIR RIGHTFUL OWNERS, LASTLY THIS WILL BE FOR 18+ IF YOU KNOW WHAT I MEAN )