Mage-Captain Ivan Halloway managed to retire from the Royal Martian Navy without seeing combat. He's a coward, so better to be retired rather than serving in the coming civil war. Back home in the Xanth system he's uncertain what he wants to do with the rest of his life, so he agrees to help an old friend. He should have gotten more details before he agreed! Karl is deeply in debt following a divorce and mid-life crisis that saw his entire crew resign so he's going to enter the illegal Black Pulsar Race, an obstacle course around a binary pulsar system run by crime syndicates. One reason it's illegal is that twenty-five percent of ships don't survive to the end, but Karl is confident the Restoya can win. The prize money will allow him to pay off his debts and keep his ship. Ivan's not a fan of this plan, but he does want to help Karl until the mob threatens to kills both of them unless Ivan helps them take the Restoya during the race. He agrees on the condition they don't harm Karl and forgive his debts, but he still has a bad feeling about this.
Pulsar Race - a quick story in the Starship's Mage universe