When their most valuable loot, a big hunk of cheese, is stolen, Riff Raff and his rodent pirate gang embark on a quest to reclaim their lost treasure.

When Biscuit and his owner go to the park to play, Biscuit chases a ball and becomes lost.

Molly's parents try various methods to help her remember her mittens but nothing seems to work.

Ben and Aggie are playing in the park when she chases a ball and does not return, but after looking for her and worrying about her, Ben speaks with his blind friend, Mr. Thomas, who suggests a different approach. When a big blue whale comes to live near their reef, there is a misunderstanding between him and Rainbow Fish and his friends that leaves everyone very unhappy and hungry. Rainbow Fish crosses paths with the big blue whale. The gentle creature...

Dink and his friends investigate why pets, like Mrs. Davis's canary, Mozart, are mysteriously disappearing all over town.

Intrepid detective Nate and his dog Sludge investigate the disappearance of Rosamund's birthday present for Nate.

When her best toy mysteriously disappears, Olivia the feisty pig is determined to find out who is responsible.

In this story without words, Molly must overcome her fear of the shadowy monsters that only she can see in order to return a lost book, and to make a new friend.

Kayla's cat, Daisy, is missing. Kayla is so worried. She calls her friends, and soon enough the entire Pet Club is on the case.

Cam Jansen, with Eric at her side, helps solve the mystery of what happened to Mr. Day's tennis trophy.