The Wanderer Cycle is a trilogy of books written by Russian-American author, Sergei Lukyanenko. It consists of three novels: "The Wanderer", "The Watchman", and "The Magician". The series follows the story of a young man named Eugene, who finds himself caught up in a world of magic and technology, as he tries to navigate the challenges of his newfound abilities and responsibilities. The first novel, "The Wanderer", introduces us to Eugene, a young man who discovers that he has the ability to travel through time and space using a magical artifact known as the "Wanderer's Staff". As he journeys through different eras and realities, he encounters various characters, both human and supernatural, who challenge him to understand the nature of technology and its impact on society. Along the way, he must confront his own personal demons and learn to control his powers in order to save the world from destruction. In the second novel, "The Watchman", Eugene must use his abilities to protect the world from an alien invasion.

''