Mosaic artist Mona Malin has a strange gift: she experiences intense and uncontrollable visions and sensations about people, even strangers. When a carpenter she knows is found dead, Mona begins to suspect that she may have killed him without her knowledge.

Roni Arosuo is sitting in a mental hospital for prisoners after murdering a man with seemingly no premeditation. His doctor enrolls Roni in a mosaic course organized by Mona, hoping that she might help him determine how this man with a previously clean record suddenly committed a shocking act of violence. Mona’s visions become more and more realistic, and soon Roni’s doctor is found dead.