Satori Senjuin is a dense high schooler whose ebi sushi key holder comes alive one day as she's going home. It turns out Punipuni, a mousy-like little creature, who's from a different dimension, took the key holder's form. When Satori gets home, even more surprises wait for her. Her computer, that she supposedly turned off, starts talking, and it's telling her to become a Dimension Counselor?! What's that, and how does one heal a broken soul?