The Gospel artist secretly collaborates with the art thief Nart. One day, on a full moon, he brings back an ancient painting. The girl depicted on it is looking either at the moon or at a dark spot under which something has been professionally erased. He reports that the painting was stolen from powerful gentlemen who do not like to show their faces, and asks for a copy in a short time. A girl loses consciousness while working and wakes up at midnight on her kitchen sofa with a bandaged wrist. She discovers that the painting is missing...