Ep 4. Imposter's Home for Um... Make 'Em Up Pals

Mac has to go away to his grandmother's house for the weekend, so he leaves the care of his imaginary friend, Bloo, to his best friend, Frankie, who works at Foster's Home for Imaginary Friends. However, when Frankie and Bloo arrive at the home, they find it has been taken over by a group of fake imaginary friends, who have set up their own home called "Imposter's Home for Um...Make 'Em Up Pals."

The Imposter's Home is run by two imaginary friends named Terrence and Duchess, who have convinced all the other imaginary friends at Foster's to join them at the new home. Terrence and Duchess are upset that they are not getting enough attention and love from their creators, so they have created a plan to establish their own home where they can be the center of attention.

With the help of Bloo and Madame Foster, the elderly owner of Foster's, Frankie sets out to save the imaginary friends of the Imposter's Home and bring them back to Foster's. Along the way, they encounter various challenges and obstacles, including the mischievous antics of the fake imaginary friends who are determined to stop them.

As they work together to save the imaginary friends, Frankie and Bloo learn important lessons about the importance of acceptance, love, and teamwork. Ultimately, they are successful in rescuing their imaginary friends, and order is restored to Foster's Home for Imaginary Friends.

The episode is filled with humorous moments and heartwarming messages, making it a must-watch for fans of the series. With its colorful cast of characters and engaging storyline, "Imposter's Home for Um...Make 'Em Up Pals" is a delightful addition to the third season of Foster's Home for Imaginary Friends.