"Shinbi is not a particularly ghosty ghost. At night she likes making tiny bouquets of things, and gazing at the far away stars. Haunting? Not so much. Even if that's what the other ghosts like. In the daytime, in a meadow, sits a single rock, casting a single shadow, named Greem. He'd really like someone to talk to. But who? He writes one word on his lonely rock: 'Hi' and hopes someone will see it. Sure enough, in the darkness of night, Shinbi finds...

Third-grader Emma McKenna's plans to start fresh at a new school are complicated when her former best friend--and now enemy--shows up in Emma's class.