While looking for his lost magnifying glass in the park, young Detective Jeffrey Bones and his grandfather discover that Curly the detective dog is missing, too, and start tracking down clues.
Shawn and his dog Keeper remain the best of friends even after the show-and-tell where Keeper trips the teacher, spills glue, knocks over the fish tank, and does not perform a single trick.
Because Shawn and his dog Keeper were born on the same day, they share a wonderful party on their sixth birthday, until it appears that Keeper has eaten the cake.