Your name is Geralt of Rivia and you are a witcher, that means you kill monsters for a living. You were given special training to be the best at what you do and your body has been enhanced with potent elixirs to help you do it. Af Nikkor 35-70mm Manual. Suffering from amnesia you remember nothing of your past. Kaer Morhen, the last remaining keep of the witchers, was attacked by a mysterious organization, just as you were starting to lick your wounds there. The battle is won but the secret recipe for the mutagen, a substance required to create more of your kind, has been stolen. The surviving witchers set out to find and reclaim it and punish everyone involved.