Sunny and Rex are royal puppies! Sunny is a lady like goldendoodle, and Rex is a mischievous beagle. They love living in the palace with their owners and best friends, Princess Annie and Prince James. The royal puppies are headed to the seaside to escape the heat. Rex has never been to the beach before, so he's very excited to play in the sand and waves, and maybe snag a hotdog or two. But Rex is a puppy who's excitement can get the best of him. When Rex goes missing, can Sunny save the day?