The White Cat is the love interest in the animated Australian short film The Cat Piano
The White Cat is a singer at the nightclub which the narrator frequents. He's clearly smitten, but is too shy to approach her.
When the local cats start disappearing, the narrator finds evidence that a human is building the titular "Cat Piano", a piano that drives a nail into a cat's tail every time a corresponding key is played. The White Cat is then kidnapped by said human. The narrator sets up a rescue mission using the remaining cats and they save the White Cat, along with the other abducted cats.
In the epilogue its revealed that the narrator finally got with the White Cat.