He recieves a mysterious letter from his former lover, the sorceress Yennefer of Vengerberg. The Witcher 3 resumes Geralt's story after the events of The Witcher 2, which finds the Northern Realms under attack by a Nilfgaardian occupation force. The game features a massive open world, a sprawling narrative and easily 100 hours of content based on exploring the world and meeting its inhabitants.