Perio's Poster is a classic tale of a quest. In this case, the quest is to solve a problem related to the periodic table of elements. Perio's failure to do so could mean nothing short of destruction and even death for the Great Polyp Reef.

Perio's Poster is the sixteenth book that has resulted from student work in Kid Scribes, a creative writing and desktop publishing class conducted by Excelsus Foundation at schools and other nonprofits nationwide.