In Book One of The Happy Atom Story, Guy met Professor Terry and was transported via her magic Periodic Table to the fantasy world of Periodic Table Land. Once there, the elements, the silly electrons, the proper protons and all the little atoms eagerly shared knowledge of their chemical world with Guy. On this journey, Guy discovered the Periodic Table holds the key to unlocking information about the atoms. Using the secrets of the Periodic Table, Guy in Book 2 teaches the elements in Periodic Table Land how to draw Bohr models of their atoms. Professor Terry then brings him to meet all the chemical families who will become part of his chemistry experience. The book ends with Professor Terry finding out that the elements in Sodium's family are very sad. She challenges Sodium to search Periodic Table Land to discover how elements can become happy atoms. His discovery sets the stage for the topic of Book 3: compound formation. The principles of chemistry are woven throughout this fantasy tale to convey principles of chemistry in a way that captures the attention of young readers making learning fun.