On the planet Ygam, the Draags, extremely technologically and spiritually advanced blue humanoids, consider the tiny Oms, human beings descendants of Terra's inhabitants, as ignorant animals. Those who live in slavery are treated as simple pets and used to entertain Draag children; those who live hidden in the hostile wilderness of the planet are periodically hunted and ruthlessly slaughtered as if they were vermin.

Hugo-Paul de Weydroos, forger who manages to mystify the most renowned experts, is an attractive man, not without talent but paranoid and megalomaniac. He lived a childhood in the Paris of the 1920s, upset by his love of drawing and painting thwarted by an abusive mother. Delivered to his own fantasies, the hero indulges in the most disordered introspection and will end up consuming himself to become the reincarnation of the one he is trying to copy: Hans Pauli Weyergans, painter of the 18th century.

During a televised debate on the Algerian war in the early 1980s, Professor Paulet denounced the methods of Captain Caron, killed in action in 1957. The widow of the captain, Patricia, decided to file a defamation suit.