Prof. E. McSquared's Fantastic Original and Highly Edifying Calculus Primer

This is a genuine calculus book, specially designed for anyone who recalls a little high school algebra and is curious about seeing the peculiar way that mathematicians have wired calculus together. Our idea was this: if we could find characters for each mathematical concept in differential calculus and set them all to work, the result would be far more lively and involving than the usual textbook trip.