Courage and his owners come to “Hollowood”. But after falling inside a manhole, they encounter a giant fetus-like being who demands entertainment. He explains to them that if he likes their performances, he will give out glamorous prizes. Courage must find the beast’s true self through his heart.

Courage finds a two-year overdue book. When he decides to return it, he does not have enough money for the $10,000 fee. The librarian then casts a spell on Muriel and Eustace, turning them into the characters from the book until Courage finds enough money to pay the fee for the book.

Courage’s mysterious past comes to light when his parents were forcibly sent to space by a cruel veterinarian. When Muriel and Eustace notice he is not responding, still haunted by that treacherous event, they take him to the same vet that sent his parents into space, unaware that the vet is now going to send […]

When Courage cannot do anything correctly, the “teacher” approaches him, who is the manifestation of Courage’s own doubts and insecurities that have plagued him. She trains him strictly into becoming a perfect dog, but in the end, Courage learns that there is no such thing as perfect.

Eustace finds Horst’s map leading to a hat made of gold and takes Muriel and Courage along, his greed leading them all into danger.

Courage and his owners stop at a lonely motel to end their vacation, but it is owned by a nefarious red cat named Katz, who harbors a penchant for feeding his guests to giant spiders.