Yukiteru is a loner who never really interact with people and prefers writing a diary on his cell phone with his only companion being an imaginary friend named Deus Ex Machina, the God of Time and Space. However, things get out of control once Yuki finds out that he needs to fight for his life to become the new God! He must put his trust in Yuno, his stalker/lover. Who can you trust anymore?!