Machin is an antisocial inventor, a man who likes to rout all of the residents in the vicinity of his apartment. No longer supports his sadness Artus, the best friend of his. The landscape makes the emergence of a young woman with glasses and shy, a musician. The inventor will do everything in his power to seduce. The two communicate, without seeing, via the famous wall. Contrary to all expectations, Machin, is breaking in. Her mind about his physical appearance, he finds an italian seducer. She gets to have a meeting with an italian whom he confuses with his neighbor.