This book continues the journey of the author in mathematics. It is a complete guide of the Piecewise Stitching Function (which is also called the PSF). It explores how the PSF can be used to transform any piecewise function into a linear form, act as a universal step function, convert code and programs into purely mathematical functions, display images and even create playable games. The core concepts and the language of the book is very simple, meaning anyone above age of 16 can read this book. Along with that , this book also contains a brief description of all the concepts that are required for this book, meaning even a new reader can start reading this book and not face any difficulties in understanding any concept.