Here's the plot:

After the evil vet sent parents off to the moon, Courage was abandoned while a puppy, but he then lives in

a house with a connected garage near the fictional town of Nowhere, Kansas with Muriel Bagge and her

grumpy husband, Eustace Bagge. He then overcomes his own fears to heroically defend his unknowing

farmer owners from all kinds of dangers and paranormal events so many times, Later then, Di Lung shows Courage that he wasn't ALWAYS egotastic, for he knows how to bring his parents back.

So they both had to face previous menaces along with the clone of the Space Chicken that rules

them all. (And wouldn't you know it? He's gotten Eustace & Muriel last the last other times...)