It's "Adopt-a-Thought Saturday," when imaginary friends can be taken by new families. Mac and Bloo worry that they'll lose all their pals, and take drastic measures to make sure they don't.

Wilt and Eduardo think there's a ghost in the home.

Mac tries to thwart Bloo's plans for a party.

Mac gets the gang to join a bowling team, but ends up getting booted off.

Wilt wants to watch basketball on TV, but the others don't. Then a new Imaginary Friend misbehaves at the house and everyone else gets blamed.

A Seeing Eye Friend loses his blind kid, and the gang helps find him. Then Boo becomes popular among Mac's classmates, who imagine their own versions of Boo.

The home needs a new roof, so Bloo tries to fund it with a cookie drive.

Mac and Bloo fall for Frankie and become wildly jealous of each other and everyone else.

Bloo breaks a prize squeaking rubber elephant.

Bloo is challenged to a fight at the end of the day, but he would rather avoid it.

Bloo becomes a celebrity as a deodorant mascot, but fame taints his relationship with Mac.

Bloo tries to make Mac cool, and succeeds all to well.

Bloo is suspicious of an old "Friend" of the house, Uncle Pockets, who returns after a long absence.

A case of mistaken identity sends Coco and Herriman to a high-society gala.

Eduardo runs away from the Home to prove his bravery, but ends up over his head in a fight.

Bloo gets a nasty case of the hiccups and must get rid of them before the big Imaginary Friend Pageant.

A camping trip becomes a problem when Bloo eats all the food.

A suspicious imaginary friend shows up at the house, and Frankie is out to prove him a fraud.

The Duchess is adopted by Mac's neighbors, and the Foster's don't want to take her back.

Mac and the crew win a trip to Europe.

The house is filling up with imaginary friends, thanks to a girl named Goo.

Mr. Herriman tries to conceal his carrot addiction, which causes a lot of trouble at Foster's.

Although Eduardo is infested with fleas, he soon befriends them, but Frankie and Mr. Herriman want to get rid of them.

Mac starts to doubt Santa's existence when a hoard of imaginary Santas appear. Bloo sets out to prove that he's real.

Mac and Bloo collaborate on a movie, which turns into a hit. Later, they must make an even better sequel for a film contest.