Peter Raeder became the Commonwealth's first ace pilot in the war against the secessionist Mollie. Now he's Flight Engineer on the fast carrier "Invincible", a crack new ship with a picked crew, ready to fight the Mollies who control the universe's richest anti-hydrogen mines, and the loathsome spider-like aliens who have come to their aid. But there are a few problems--big problems.

Peter Raeder became the Commonwealth's first ace pilot in the war against the secessionist Mollie. Now he's Flight Engineer on the fast carrier "Invincible", a crack new ship with a picked crew, ready to fight the Mollies who control the universe's richest anti-hydrogen mines, and the loathsome spider-like aliens who have come to their aid. But there are a few problems--big problems.