Rika has a ghost problem. She can see ghosts. Feeling suicidal, she gambles with fate, only to find that her near death experience makes her a medium for ghosts. The ghosts ask Rika to help them get revenge on the criminals who killed them. However, in order to do so, Rika must walk the line between the living and the dead. Rika agrees, but even after the ghost named Keiko gets revenge, she is not able to die in peace. Another ghost appears, and lets the group know that the real murderer was someone else, an enemy which they all need to take down. The ghost squad powers up to battle the worst kind of killers for absolute justice.