Each episode featured The Cat in the Hat who leads neighbors Nick and Sally, the Fish, and Thing One and Thing Two on a variety of adventures in his "Thinga-ma-jigger", a Seussian contraption that can sprout wings, pontoons, booster rockets, change size, and do just about anything else necessary to further the adventure. The adventures are prompted by a question posed by either Nick or Sally at the beginning of each episode,[5] which inevitably leads them around the globe to "make natural science discoveries.