Millie had promised her dog, Honey and her puppies, Salazar, Jasmine, Burt and Blinky a day of fun and a picnic at the lake. She kept her word, and they set out trekking through the forest. As they were getting near the lake, Salazar finds an egg-shaped silvery vehicle, which to their surprise, takes them on a journey of adventure beyond their wildest imagination. Join Millie and the gang as they ride the Instant Traveling Machine and explore Catatonia, a planet of felines, beautiful scenery, and one very extraordinary amusement park.