Mac wins a sweepstakes and receives tickets to Europe, but when the gang tries to pack at the last second, everyone has delays that make them later and later. Frankie is making sure that Madame Foster can take care of the house while everyone is gone, though all she wants to do is break the […]

When various imaginary Santa Clauses are brought to Foster’s, Mac begins to lose his faith in Santa’s existence, so it is up to Bloo and the others to help restore Mac’s faith in the old St. Nick. Bloo sends Wilt on a sleigh ride around the world and tries to get Eduardo to slide down […]

Mac seeks the aid of Jackie Khones to find out who stole his library card and used it to check out a now overdue book.

Mac and Bloo ask Mr. Herriman to go camping. He refuses to let them go, but Madame Foster thinks it is a great idea. After they arrive, Bloo has eaten all the food. Mr. Herriman then sets off into the woods in search for more food, and then meets wild bunnies. Meanwhile, back at camp, […]

In this double-length special, it is time for the Five Year Creator Reunion Picnic, where imaginary friends’ creators come to Foster’s to see their former friends. One friend’s creator, however, is missing: Wilt’s. Wilt, believing that his creator is still mad at him for a past let-down, sets off on a cross-country journey to set […]

During the production of the home’s newspaper, Uncle Pockets, the most frequently adopted imaginary friend to come to Foster’s, returns yet again. Uncle Pockets’ charm drives all the other friends’ attentions to him, making Bloo jealous. Bloo then decides to try to expose Uncle Pockets as a fraud through the home’s newspaper.

When rain forces them to cancel their trip to a water park called Monsoon Lagoon, the gang decide to have their own fun, by making videos and uploading them to ViewTube (a parody of YouTube), while Bloo is constantly sulking because of their canceled trip.

A termite infestation at Foster’s forces Mr. Herriman to move the Friends into a hotel for the night. While at the hotel, Bloo, being rambunctious, gets out of hand, disobeying all of Mr. Herriman’s rules. To get rid of him, Wilt, Eduardo, and Coco play a prank on Bloo, though Mr. Herriman believes Bloo did […]

A rich kid named Barry Bling comes to Foster’s, and Mac and Bloo introduce him to all of the friends. After seeing all of the friends, Duchess chimes in and says that she wants Barry to adopt her. Barry instead wishes to adopt Bloo, but Mac tells him that Bloo is not up for adoption, […]

Bloo becomes tired of always losing to Mac at everything, so one day at the Prize Hive, he challenges Mac to a thirty-mile race back to Foster’s.

The gang goes to a swap meet where a pick-pocket is stealing money. When the thief accidentally loses a $100 bill, Eduardo finds it and takes his money around the swap meet looking for something to buy. Even the most sensible of the gang are tempted by the bill, and with the thief also trying […]

A little dare between Mac and Bloo turns into a huge daring competition between the house members once Madame Foster gets involved.

Richie Wildebrat, a kid at Mac’s school, keeps bragging about his imaginary friend, Blake Superior and how they will win the imaginary friend talent show pageant. Mac wants to beat him so it can end Richie’s bragging, so he asks Bloo to enter the pageant, but Bloo does not want to. Bloo gets the hiccups, […]

Bloo has a reputation for being a funny imaginary friend, though his jokes sometimes offend people. When Bloo cracks a joke about an imaginary friend’s height, the “New Guy” challenges him to meet him outside at 4:00.

A Rock And Roll Band called Pizza Party formed by some Imaginary Friends annoy Bloo by not allowing him to be their lead singer, so he decides to form his own band with Wilt, Eduardo, and Coco called Taco Fiesta. Soon, they are challenged to a “Battle of the Bands”.

Everyone in Fosters is sick of Herriman’s rules, so Frankie decides that she should run for president. Bloo also decides to run when it is stated that any resident of the house can be a candidate. After Bloo resigns, he helps Herriman by giving the house embarrassing and even untrue facts about Frankie. Frankie eventually […]

Foster’s is finally able to get rid of Duchess when she is adopted. However, the family that adopted her turns out to be Mac’s neighbors and her complaining gets to be too much for Mac’s mother to handle. Terrence tells Mac that she is thinking about moving to Singapore (which Terrence thinks is in Wisconsin). […]

Bloo finds out about a door in the home that everyone is forbidden to open. He asks around about the door, but no one will tell him what is behind it. Finally Bloo snaps and opens the door, releasing hundreds of imaginary friends called scribbles, small friends created by babies. The scribbles are natural hard-workers […]

Mr. Herriman’s carrot addiction leads him to blame Coco for stealing the carrots that were to be used for dinner that night, though it was him who hid them around the house. With no carrots left, the only thing left for dinner is to make “It,” a dish that Frankie has never been able to […]

When Foster’s needs a new roof, Bloo bakes up a plan to sell Madame Foster’s amazing cookies after his first attempt at selling lemonade in the middle of winter fails. When they finally get enough money to buy a new roof, Bloo sets himself up as the town’s cookie mogul.

Frankie is upset that she has to do paperwork when she wants to go out with her friends on Friday night, so Mac tells her he will file the paperwork for her. Overjoyed by this, Frankie calls him “the best” and kisses him on the cheek. After that, Mac develops a huge crush on Frankie, […]

This episode tells the story of “The Big Cheese” through the eyes of a one-inch tall imaginary friend named Peas, detailing how he helped Frankie turn a negative into a positive.

Bloo is convinced that Cheese is a spy working for an evil extraterrestrial organization to steal the brains of everyone on earth after seeing a sci-fi movie and reading a tabloid newspaper where it’s pictures is similar to him. Later on, Frankie and everyone else (including Bloo) is stuck in an out of control day […]

It is 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. Not wanting to lose any more friends, they spend the day forcing everyone back into the […]