The United States has received a message from distant planet Tyrra: Will you meet with us? The President wants to send someone who is friendly, but also someone brave, adventurous, and clever - who better than Stanley Lambchop? The whole Lambchop family bundles into the Star Scout spaceship with Stanley as Chief Pilot to voyage to the farr-off Tyrra. But do the Tyrrans simply want a friendly meeting? Or did they lure these intergalactic visitors for another, secret reason?