Yukiteru is a quiet boy who spends most of his time typing on his cell phone diary. One morning he realizes that the entries in his diary are from the future! But according to what his cell phone tells him, waiting in the near future is his death. Unknown to him, Yukiteru has been dragged into a battle of survival involving cell phones that tell the future. With a shady girl named Yuno, who may be friend or foe, at his side, Yukiteru must face 12 opponents who all posses Future Diaries.