Safely back home in San Francisco, Melly's life has returned to normal as she tries to learn new tricks and have fun with the cats. But with Mama and Papa (their human owners) gone for the day, it may be the perfect opportunity to pay a visit to her friends from the magical world hidden in the backyard. And this time around, the cats want to tag along too. (After all, they need to find someone who can help them open their cans of food!)
But instead of a warm welcome, Melly finds everyone in the kingdom has succumbed to some mysterious deep sleep. And it is all thanks to Wilma the Wizard, the very same person who long ago stole Narra's powers. She now wants to finish what she started and steal the magic from other mythical creatures, so she can become the most powerful wizard in the world. With no one to turn to for help--except for a surprising new friend--it'll be up to these four ordinary pets to somehow stop an extraordinary foe and save the day.