We look at the early years of the woman who would come to be known as "The Tigress of Forlì", Caterina Sforza starting with her youth at the court of her father, duke of Milan Galeazzo Maria.
We then move on to the traumatic start to her marriage to Girolamo Riario, nephew of pope Sixtus IV, as he starts his ambitious rise to power, that will eventually lead him to his doom.