[The episode begins with a dark screen. A light appears and a train's horn sounds. The light gets bigger and bigger, until it takes up the entire screen. The light is then revealed to be the headlight of a toy train, which travels across the Toy Palace. Tommy, Chuckie, Stu, and Chas all watch the train as it goes over the bridge, and Tommy gasps in awe. He then looks at Chuckie as Stu and Chas pull their strollers away, then across the store.] Chas: "Yikes! What's that?" Stu: "Oooh! Avogadro the Alligator!" [As Stu talks to Chas, he pulls Avogadro off the shelf.] Chuckie: "Oof!" Stu: "Tommy!"