Yso Nakema (The Lion), famed and feared Earth agent, is on Androcles, an old colony world now ruled by the alien Kerexz. His mission is unknown, even to himself. He will learn of it as he meets his contacts on his journey. It's a tried and trusted mission technique, but this time things are going wrong. Unexpected obstacles rise in his way, the enemy seem to be everywhere they shouldn't be, he fails to make contacts and, worst of all, he finds himself...