Grade school students fight against supernatural forces.
There's a girl in Satsuki's class who is a little off; she tends to the rabbits at the school, whom she says are her only friends. But if that's weird, then it gets only stranger when a dead rabbit shows back up at the pen, alive and well.
Hajime has a close encounter with a spooky cab, which the rest of the gang doesn't believe; even when they see it for themselves, it seems like a perfectly normal cab, that is until the cab driver takes them to a life-draining tunnel.
The gang finds a strange doll in the trash; Satsuki prevents Keiichiro from bringing the doll home, but it shows up regardless; late at night, Satsuki gets a phone call from none other than the doll herself.
A strange nurse haunts Keiichiro, which triggers memories of the past, not just for Satsuki and Keiichiro, who remember the death of their mother, but for Momoko as well, who happened to meet their mother just before she passed away.