Alex was not healthy and living in a tough environment (or so he claimed) with a couple of dogs.
Then he was taken, temporarily of course, by relatives while the family was away and lo and behold, he started getting healthy and having fun!
So the new family (parents) decided to keep Alex and he has become an important and loved part of their family.
I guess I'm a sucker for a happy ending, even when it has to do with cats.