Since ancient times, the world of Remnant has been under constant threat by the Grimm: creatures of nightmare obsessed with destroying both humans and the half-human Faunus. To protect themselves, the four kingdoms of the world established academies that train young people to become huntsmen: warriors tasked with destroying Grimm. In the kingdom of Vale, the cheerful 15-year-old Ruby Rose has always dreamed of a life at the prestigious Beacon Academy. Sadly, being too young, she can only watch as her elder sister, Yang Xiao Long, sets off for the academy alone. But everything changes when Ruby fights off a group of armed robbers, and the news of her skillful exploit reaches Beacon's headmaster, Professor Ozpin.