Cesare and the King of France organize their wedding, one after another, the day of the Assumption, a date when it rains consistently. Cardinal Orsini, very sick, terrified of what awaits him after his death when he thinks about his relationships with friends and enemies of the pope. Lucrezia plays on the big surge of hope caused by the salvation and the power of forgiveness to ease political tensions.

Lucrezia is in a delicate position with the return of Rodrigo Borgia. It reigns supreme and does not hesitate to be cruel to his enemies. Pope became a counselor with him, Lucrezia can neither impose his word, nor to stop the fears of her husband, which occurred with the arrival of Cesare in Rome. The son Borgia is carried by his desire for conquest. Fierce, he is ready for anything ...

Cesare's ultimate judgment is realized while Lucrezia struggles to make sense of her family's history and its future.

Cesare Borgia celebrates Mass on Ash Wednesday for the King of Naples and his court. According to the liturgical texts, Cesare made ​​a sign of the cross on the forehead of each participant with ash, in these words: "Remember that you are dust and to dust you shall return." But when comes the turn of King Federico d'Aragona, Cesare draws a "C" on his forehead. Thus causing the sovereign Cesare stands in contradiction with the spirit of contrition associated with this holiday.

The crowds gathered on Saint Peter's Square in Rome, while another big celebration takes place in Spoleto. This episode, largely devoted to the celebration, the narrative ends by Rodrigo Transfiguration to a group of children. The story is accompanied by a warning to adults who listen Rodrigo, including Giulia and Virginio Orsini. Rodrigo, Lucrezia and Cesare are transformed as they endorse their new roles, sometimes an inspiration to others, sometimes manipulative attempt to influence them.

While Lucrezia is head of the Vatican, Rodrigo Borgia continued his retreat. He tries to erase his feelings of love for Julia and her desire for her own daughter, now married to Alfonso di Calabria. But even away from all temptations, he struggles to get there. For his part, his daughter, a young woman who became regent seat with wisdom and moderation, qualities that are lacking in Cesare. The latter, still at war in Romagna, hopes to achieve with a little luck to defeat Catarina and all the enemies of the Borgia family ...

Cesare's new mistress could trigger a diplomatic incident, and public allegations of debauchery are made against the Borgia family.

When one of his commanders captures a city without authorisation, Cesare must appease a ruler. Lucrezia's son suffers a potentially mortal fall.

Outside of Italy, rebellion stirs and the Cardinals fear they'll lose their power, while plans begin for Lucrezia's next marriage.

Cesare loses his lover and his daughter, leading to a painful defeat, and Lucrezia's betrothal becomes politically and emotionally complex.

Cesare's renegade generals mount a rebellion against him, while those close to Rodrigo conspire against him, all on the eve of Lucrezia's wedding.

Cesare covets the hand of Carlotta d'Aragona and the Naples throne. Rodrigo et Lucrezia, for their part, wold like to turn the page on the death of Juan Borgia.

Though officially their uncle, Cardinal Rodrigo Borgia gathers his three children, but Juan's and Cesare's lack of control threaten his life's work.

When a plot to poison the pope is baffled and the pontiff's original testament restored, Cesare watches his brother rise further in Rodrigo's esteem.

A quarrel starts among the cardinals and old reckonings are being settled, while Cesare offers his son as a sacrifice to God, abandoning the newborn.

Rodrigo promises estates and offices for those voting in his favour, and when white smoke rises, he leaves the conclave as Pope Alexander VI.

As peace remains brittle, Rodrigo publicly acknowledges his paternity of Juan, Cesare, Lucrezia and Goffredo to strengthen the family bonds.

Instead of keeping the peace, Rodrigo gives in to Giulia's urging and has his men take up arms, but under Juan's command the campaign fails.

With his enemies advancing and his troops deserting Juan's command, Rodrigo has to take a tough decision that puts Cesare's life at stake.

By the intervention of Spain, France is forced to withdraw, but Isabella of Spain demands a purge of the Jews from the Eternal City.

To prove himself worthy of the crown of Naples, Juan proposes to convert the Jews in a mass christening, but accidentally reveals a dark secret.

Savonarola was sentenced to death by hanging by the Pope Alexander VI after admitting acts of heresy under torture. He uses his last breath to curse Cesare Borgia and the whole family, in the name of God. Later, Cesare attend Midnight Mass and Easter lights the traditional fireworks fireworks Florentine. Alessandro, his lifelong friend, wish him "peace of God", but the peace of God is more interested Cesare.

In the vineyards of the Palazzo dei Santi Apostoli, Cardinal Giuliano della Rovere selects grapes for the blessing of first fruits. He is assisted by Cardinal Raffaele Riario Sansoni, more concerned with political cases. Released from his vows of Cardinal Cesare is of golden armor that belonged to his late brother Juan. Thus dressed, he poses as a king on the papal throne, having finally materialized all its own idea of "ascension" to heaven.

A violent rainstorm fell on Rome. Rodrigo Borgia, Pope Alexander VI, is doing sex with his mistress, Giulia Farnese, when the ceiling of the papal chamber collapses on them. Rodrigo found alive under the debris, is in shock. Like the apostles, he began to speak in different languages​​, believing that the Holy Spirit is in him.

Each member of the Trinity, Borgia (Rodrigo, Cesare and Lucrezia) must find his own unit: head, heart and soul. Rodrigo confronts his addiction to drugs, Cesare intrigue at the court of the King of France to win the hand of Carlotta, while Lucrezia must overcome the sad reality of her love life.