A wild desert crossing, a secret island paradise, a hidden underground civilization, plus London and Paris. In the 1970s, Michael Moorcock, a writer of genre fiction, attempts to save his failing marriage by taking his wife and daughters to Paris. One night in a bar he is amazed to find himself drinking with heroes of story and history. The next day he awakens aboard a sailing ship, kidnapped into another reality by a French highwayman and the four Musketeers, who know Moorcock well from adventures in London's Alsacia... but that was another Moorcock, from another world. Soon after they reach Africa, the company are rescued from ambush by Antara, a poet-adventurer who offers to lead them across the desert and through several realities to the estate of Lord and Lady Blackstone. The trip is full of wonders Moorcock has read, dreamed, or written: an underground civilization of nonhuman creatures; a magical oasis where the lion lies down with the lamb; a lush garden inhabited by miniature dinosaurs. They are pursued by the notorious Jacob Nixer, who also remembers the Alsacia and is determined to destroy Moorcock and his companions.