Izayoi Sakamaki, Asuka Kudou, and You Kasukabe are three remarkable teens who have psychic abilities but are bored with their abnormally humdrum lives—until, suddenly, each of them receives an odd letter with an invitation to a secret land called Little Garden. Kurousagi greets the trio after they are inexplicably placed into a huge new universe, explaining that they have been granted a once-in-a-lifetime opportunity to engage in unique high-stakes games employing their powers. However, in order to participate, people must first join a community. When the gang learns that Kurousagi's hamlet "No Names" has lost its official status and abundant land as a result of their loss at the hands of a demon king, they set out to help recover the dignity of their new home.