Timmy looks forward to his birthday until Jorgen reminds him that each birthday draws him a year closer to losing his fairies; however, Timmy is not worried because his parents always forget his birthday, but he then panics when they seem to remember it this year.

Since all Fairies have an Anti-Fairy counterpart, it was only a matter of time until Poof's was born. Anti-Wanda gave birth to a square-shaped Anti-Fairy baby named Foop, and from the moment he was born, Foop is already even more intelligent and evil than his father, Anti-Cosmo, and turns on the Anti-Fairies by turning Anti-Fairy World into a colorful place. Soon after, Foop learns about the lack of fanfare surrounding his birth, and learns that his Fairy counterpart, Poof, was already born before him, stealing the title of first magic baby born in thousands of years. Foop now sets his sights on getting rid of Poof so that he will get all of the attention. Unfortunately for him and the rest of Anti-Fairy World, Timmy and his fairies have more than one trick up their sleeves.