Merry, the only demon to ever cross over from the dream world into the real world on her own. She is confused, has lost her memories and wants only one thing – to get back home. However, this poses a problem. Merry knows nothing about herself or the dream world and ends up stumbling into Yumeji, a high school student who appears to have some sort of physic dream connection. He vows to help her get home and as they start to discover Merry’s real potential and the secrets demons possess – things start to get a little complicated.