A quiet, ordinary town is unsettled by a series of strange events caused by the darkness within human hearts. There are no solutions in the real world: only "Dream Messengers" can find the answers. Dream messengers bridge the fabulous with the real and control the power of dreams. Their leader, Mishima Touko, works alongside eight other messengers, utilizing powers granted by an old spell and a toy crafted by Touko's father. Touko, her younger sister Rinko, Tachibana Hajime, who loves young girls, and the six other Dream Messengers are assigned the names of days or stars—Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Raff, and Keito.