Pasquale Lojacono moves into a large flat with his wife Maria following a special agreement with the owner: in exchange for free accommodation, Pasquale must dispel rumours that the house is haunted by ghosts. The protagonist begins to receive regular sums of money from spirits who, according to him, are particularly generous and supportive towards him. As time goes by, however, it turns out that the source of his fortune is a ghost who, having become Maria's lover, wants to silence him and plan an escape with her. Added to this unusual love triangle are the doorman, his sister and the lover's family, each of whom, in their own way, exploits the rumours of ghosts for their own gain under the gaze of Professor Santanna, who observes and comments on the inexplicable events with Pasquale from the window of the flat opposite.