Lord Slyme and his crew of T. rex servants were on their way to the space-car races on another planet when they accidentally crashed on Astro Prime and were unable to repair their ship. He had one of his slaves make a distress call back home to Teerex Major. Slyme quickly got hungry and quickly sniffed out the astrosaur cadets' campsite and told the other T. rexes to help him find the "delicious meaty smell" to the south. Blink and Dutch overheard their conversation and told Teggs about what they had seen.