The Witcher 2 storyline

The Witcher 2: Assassins of Kings picks up shortly after the events in the original game. Geralt has been essentially drafted as King Foltest's personal bodyguard and the king is engaged in a battle with troops loyal to his mistress, the Baroness Mary Louisa La Valette after what can best be described as a lovers' spat.

Prologue
The Prologue opens with Geralt in chains in the La Valette dungeon. He is soon dragged out for interrogation by Vernon Roche, leader of the Temerian Special Forces known as the Blue Stripes. We then learn that the witcher has been accused of killing King Foltest and it is up to him to convince Roche of his innocence. The rest of the prologue serves as a game tutorial as Geralt recounts the events leading up to the king's demise.

Tw2_icon_numberone.svg Chapter I
Having escaped the dungeon and the executioner, Geralt embarks on a voyage to Flotsam, the last known location of Iorveth and his commandos. On the way, he is accompanied by Roche and Triss.