Foster's Home for Imaginary Friends

When Mac visits Foster's, Bloo insists on showing him something on the roof, but the two become lost and cannot find their way back downstairs. Meanwhile, in the dining room, the others secretly sneak food while Mr. Herriman insists they wait for Bloo before starting dinner.

It's Adopt-A-Thought Saturday, an event that focuses on getting good friends adopted on the weekends when children are out of school. Mac and Bloo find out what Adopt-A-Thought Saturday is about after their good friend Jokey gets adopted and spend the day forcing the friends back into the house so that they won't be adopted.

On Madame Foster's birthday, Frankie realizes she has forgotten to buy streamers for the party, prompting Mr. Herriman to send her to the store. Mac, Bloo, Eduardo, Wilt, and Coco accompany her but wander off in the mall and become involved in various mishaps, slowing Frankie down.

Bloo decides to open the one door at the retirement home for imaginary friends that is never, ever to be opened, and the house becomes infested with something bad.

Terrence has an idea to make up a friend named Red to beat Bloo up with so he can bully Mac to his heart's content, though the friend he creates ends up friendly instead of mean and violent.

Bloo is jealous of Wilt getting special attention for the number of abandoned imaginary friends he brings to Foster's, so he tries to rescue imaginary friends just like Wilt does. When Bloo finds a man in a cell-phone suit and thinks he's a friend, he takes him to Foster's, thinking everyone will give him more praise than they gave Wilt.

Mac and Bloo get embarrassing footage of Mr. Herriman while conducting interviews for a Web site.

A new Imaginary Friend named Berry has her eyes on Bloo, and Mac stands between them.

While taking out the trash, Eduardo finds a puppy and decides to keep it, despite dogs being forbidden in the house due to Mr. Herriman's fear of them.