And to Think I Saw it on Mulberry Street follows a young boy named Marco.
One day, when walking home from school, Marco thinks of his father's good advice: "Marco, keep your eyelids up" he said, "And see what you can see." However, Marco doesn't heed his father's advice and becomes fixated on horse pulling a wagon on the eponymous Mulberry Street. In fact, he becomes fixated on the horse pulling a wagon that he starts to imagine increasingly ludicrous but entertaining scenarios that the horse and wagon are involved in. For example, he first imagines that the horse is actually a zebra and later that the wagon is a cart holding a brass brand.
Suddenly, Mulberry Street turns into a grand and amazing parade in which an airplane drops confetti and a magician pulls a rabbit out of his hat. However, Marco quickly snaps back to reality and comes home to find his father waiting for him. Marco, who is eager to tell his father all about what he saw on Mulberry Street, ultimately simply tells him he saw a horse and a wagon.
