Cosmo is chosen to hold the notoriously short Fairy Convention. But things go haywire when he decides to hold it in Timmy's bathroom, especially while they're having Mr. Crocker over for dinner!

Pixies have bought fairy world! Under the new management of the monotonous and very corporate Pixies, everyone's wishes are being denied. So Timmy challenges the head pixie to a winner-takes-all game of miniature golf: If Timmy wins, the pixies will leave fairy world, but if he loses, Cosmo and Wanda will have to leave Timmy forever.

Timmy wishes that Tom Sawyer could come out of his book and help him with his book report.

Fairly OddBaby is a 2008 television film and season premiere of The Fairly OddParents’ sixth season, which first aired on February 18, 2008. The episode was the first to air after a one-year hiatus. The episode received 8.81 million viewers in its initial airing.

The special follows on the series' main character 10-year-old Timmy Turner with Cosmo and Wanda, who are Timmy's fairy godparents and grant his wishes. The special introduces a newborn fairy baby named Poof, who is the child of Cosmo and Wanda and becomes Timmy's fairy godbrother. Poof comes into existence when Cosmo and Wanda decide to have a child of their own, and Timmy wishes it so. However, because the fairy baby's magic is developing and uncontrollable, villains called the anti-fairies and pixies seek to steal the fairy baby so they can take over the fairies' home, Fairy World.

Timmy's got to have his tonsils out and Vicky is determined to make his stay in the hospital as painful as possible!

Feeling that Cosmo and Wanda are neglecting him for Poof, Timmy gets his godparents to give him his own magic wand with ten wishes on it.

Mark Chang is called back to the planet Yugopotamia to become King when Princess Mandie sizes the throne from his father, and Timmy has to get help from Vicky to save Mark and his people.

Binky is ill so Jorgen comes to cheer him up by telling him a magical story about Timmy Cosmo and Wanda, but this is bad news for the trio as what ever Jorgen says will happen in the story. This will be tricky for the two heroes and pack mule.

It's up to Timmy to save the universe from the Darkness, a large black hole that could destroy the universe by sucking out all the light and magic in it. Jorgen then sends all the fairies to Earth in order to hide. Timmy then sees some anchient cave drawings that claim that he is the "Chosen" sent to defeat the Darkness by finding three powerful magic wands with the help of Cosmo, Wanda, and Poof, but the Darkness then sends his minions, the Eliminators, to hunt Timmy down throughout the universe to destroy him before he could find those wands.

Timmy learns he merely slowed down The Darkness and now he must seek a second wand to defeat this evil force. Timmy is forced to make amends with his enemies in order to fight for the betterment of mankind.