One day in Mid-April Monica recieves a late birthday present from her traveling best friend, David. It turns out to be a giant Tuna fish! But hes not a happy Tuna but a very grumpy tuna. Monica must overcome the struggles of such a large grumpy pet. She'll have to name him, feed him, and walk him! Making sure his food is fishy and his water salty, she sets off on this journey.