Josephine, a young woman moves into an old apartment with a human shaped stain on the wooden floor. She is avoiding any deeper contact with others and often pushes people away with her sarcastic approach. Jo hides her personal body issues and distracts herself with the mystery of the stain, rather than joining the neighbours party.
While lying on the stain and playing the corpse Jo gets a splinter that becomes an escape tool for a tiny naked version of herself, named Pepi, who crawls out and runs away, leaving a tiny stained hole in Jo’s belly.
Jo becomes empty and apathetic, unable to carry on with her usual protective sarcasm. The tiny naked Pepi dives deep into the experiences, previously avoided by Jo, but soon learns that the world is a dangerous place, when you blindly follow your desire.
After realizing that they cannot live apart, Jo sets off to find Pepi in order to save them both, leaving her fears behind.