King's human, Kayla, has baked some treats for a friend's new puppy, Thor, but some go missing and it is up to King to find the culprit.

When a mysterious letter written in code arrives at King's house for his human, Kayla, he follows the trail of the person who left it.

"Trying to communicate with his human owner (and detective partner) can be frustrating for King the golden retriever as he uncovers clues in a missing dog case."--

King & Kayla hunt for Asia's missing gold ring.

King and Kayla go on a sleepover adventure at Thor and Jillian's house, where they investigate spooky occurrences in the basement.