500 years ago, Xinrhius started a war that took millions of lives. The families of the deceased people killed Xinrhius and there, he became a Grim Reaper, guiding deceased people's spirits to their final destinations. Years later, he met Devin, a college student that can see ghosts. At first, Devin thought that Xinrhius was a normal ghost so he tried getting closer to him, but Xinrhius tried everything to get away from him after learning that Devin was suffering from a heart condition and he knows how long Devin will live. But with their love binding within another, they couldn't get away with it and fall in love deeper. Now, the Grim Reaper, Xinrhius wants to protect him and make his life longer even if his own life is on the line.