Since becoming a widower, Tommaso has been raising four daughters on his own: perfectionist Vittoria, rebel Sara, synchronised swimmer Matilde and archer Elena. He is a quiet man, or rather ‘boring and monotonous’, who talks about nothing but the windows, handles, frames and double glazing that he produces with his small company, assisted by his only employee Italo, a sex addict who urges him to ‘find a woman’ on the web. His daughters also encourage their father to find a new partner to bring him out of the isolation he has confined himself to, following his company’s motto: “the world is annoying, shut it out”. And it is they who send him to a party at his bank where he meets the executive Lara: it is love at first sight, but Tommaso does not reveal the existence of his daughters to Lara, fearing she will be scared off. What he does not know is that, for the same reason, Lara has not revealed the existence of her three children to Tommaso.