Treasure planet

A young man and his Kzin friend seek technological bounty on a forbidden planet while in a race with Kzin space pirates willing to kidnap and kill to make the treasure their own. On Wunderland, a generation after Liberation, memories of the bloody kzin conquest and Occupation have faded, and men and kzin live largely in peace. But the fabulous treasure of the kzin pirates, hidden on a distant world, remains a magnet for freebooters. Young Peter Cartwright and his kzinrett friend Marthar receive information and map from a most unlikely source and soon themselves fighting the most ruthless pirates in Known Space for an unimaginable prize.