Stupendo the dog has died. But that's just the beginning of his story.

To love and protect. The code of the good dog is clear. When single mother Tuesday took on mongrel pup Stupendo, she made a friend for life. Through the best and the worst of times, Stupendo has been there for her. Ever faithful, ever loyal, ever true. Nothing could break their bond. Until last week.

Stupendo doesn't know why Tuesday is suddenly ignoring him or why his doggy antics no longer seem to soothe Baby William. It takes his worst enemy - the cat next door - to break the news that Stupendo has become a ghost.

Somehow left behind on Earth, Stupendo knows he has unfinished business. Enlisting the help of the community of animals in the neighbourhood, Stupendo must get to the bottom of the very human sadness that hangs over his old home and keeps him from saying goodbye to Tuesday.