A Jaune Arc from Earth, where the show RWBY exists, gets transmigrated into the body of Jaune Arc from the world of Remnant. Except this isn't the world of Remnant that Jaune knew from the show. It was different in many aspects. People were granted Classes such as Knight or Warrior over their heads at the age of 10 and the Grimm were a source of experience for all classes. What was a wayward transmigrate going to do in such a world of bloody evolution?