Oh no, the newest foster puppy is missing! The Peterson family has fostered many dogs, but they have never actually lost one until now. It all starts when Charles visits a local dog show and brings home Ziggy, an adorable black-and-tan dachshund whose previous owner was totally overwhelmed. Ziggy is a curious and incredibly active little guy who loves to put his nose to the ground and explore every inch of the yard. Unfortunately, his adventurous spirit gets him into major trouble when he decides to dig a deep hole right under the backyard fence and squeezes his way out! Now, the pint-sized pup is loose in the neighborhood, and the Petersons are in a complete panic. Charles and Lizzie must launch an emergency search party to track down their adventurous friend before he gets hurt. Will they be able to find Ziggy and bring him back to safety before it is too late?