Mama Cosma is sick and Cosmo and Wanda have to take care of her. At first, Wanda does not want to do this, but after she finds out that Mama Cosma is nice when she's sick, she is happy to help. However, since this is a limited time sickness, Mama Cosma is back to her old self by the end of the episode.
She first appears at the baby shower. Later, she appears reporting that Cosmo is not in his room. Later, Mama Cosma is at the hospital where she just wants to pinch the cheeks of the unnamed baby (Poof). Later, Mama Cosma helps Jorgen to find Cosmo, Wanda, Timmy, and the unnamed baby. Later, Mama Cosma is ejected from the plane that Jorgen and her are in.
She appears as one of the fairies participating in the games. Her most important part was when Timmy made her fall asleep so her hair, which was unusually long, could beat Anti-Cosmo and the Head Pixie in a race.