When a nun in a remote convent claims immaculate conception, the Vatican sends a team of priests to investigate, concerned about an ancient prophecy that a woman will give birth to twin boys: one the Messiah, the other the Antichrist.

Like every Saturday, Rosa Priore prepares the ragù for Sunday while her husband Peppino paces nervously around the kitchen, arguing about every little thing. When Sunday arrives, the entire Priore family gathers around the table and Mrs. Priore wears a beautiful blue scarf given to her by her neighbor, the thoughtful accountant Ianniello, who lavishes compliments on Donna Rosa and her cooking. After yet another compliment, Peppino explodes and accuses them in no uncertain terms of having an affair. Sunday is ruined, but will the family be able to pull themselves together on Monday?

In her public persona, Eleanor “Tussy” Marx was a translator, actress, a children’s rights activist and a persuasive labour organizer, a tireless powerhouse determined to carry on her father’s work. She held her own with twentieth century gods, including both her father and his colleague Engels. In her privately life, however, she was vulnerable and her attraction to the self-indulgent and self-important Edward Aveling led her into misery and ultimately proved fatal.