Hoseok is a guardian angel. He's watched people grow up, he's watched people die. His job is to protect a person until it's time for their lives to end. He isn't supposed to feel, or at least, he shouldn't voice his opinions or feelings. But when Hoseok is assigned to protect a guy named Kim Taehyung, a normal, average guy with a brain the size of a pea, he can't keep silent. He can't keep his emotions down. And this is how Kim Taehyung slowly destroys him.