Set in a world where history has taken a slightly different course from the one we're familiar with, K follows the story of a young boy whose life is caught in a psychic war between seven kings. Yashiro Isana, also known as Shiro, is wanted for a crime he has no recollection of committing. He finds himself being hunted by the groups Homura, led by Mikoto Suoh, "The Red King," and Scepter 4, led by Reisi Munakata, "The Blue King." While on the run, a young man named Kuroh Yatogami helps him. This fated encounter will change Shiro's life forever.