Sandro, a lawyer, has three sisters and a father, Renato, a man of about seventy-five, who despite his age still loves women very much. The arrival of Lena, Sandro's foreign housekeeper, upsets the normal family balance and provokes different reactions among the various members of the family...

Montalto, 2021. On the occasion of the historic 500th anniversary of the birth of Pope Sixtus V, the mayor of the birthplace of the famous pontiff, hires an author of religious musicals from the Marches, Angelo Santini, to create a show inspired by the famous papal events. Among these Angelo readapts one, under the cumbersome supervision of the village parish priest, and entitles it "Acqua alle corda", inspired by the well-known story of the obelisk in St. Peter's Square.The mayor is very pressing on the fact that this show must have an important resonance, and urges Angelo to find a theater company worthy of attracting the attention of the media. Angelo therefore involves a very high-level musical company which, thanks to its autonomy, completely upsets the religious spirit of the work,bringing it to a demented dimension, and consequently triggering unpredictable tensions within the country.

Marco encounters his ex-girlfriend Consueloand starts seeing her without telling that he has just married. Antonio is an MP and during his European trip he has a love affair with elegant Olga who has a big secret to hide. Recently-jilted Fabio is mistaken for psychiatrist by a beautiful girl Valentina with whom he falls in love. A divorce lawyer Sandra is romantically attracted to her client's husband Massimo.

The Russian magnate Ivanov dreams about having The Popcorn, his favorite Italian musical band from the 80s in Saint Petersburg.