When Merlin is weighed down by sorrows, Jack and Annie travel back to feudal Japan to learn one of the four secrets of happiness.

Princess Anna has never been close with her sister, Princess Elsa. When Elsa becomes queen, she releases an icy spell on their beloved kingdom and then runs away. Now Anna must find her sister and save their kingdom--or it will stay frozen forever.

The Alden children help out a storeowner at the Hope Harbor Mall and discover that someone is tampering with the merchandise shipments.

"A ninja must be strong, courageous, and silent! He creeps through the house on a secret mission. There may be obstacles! But have no fear--a true ninja can overcome all challenges"--

After years apart, Anna and Elsa are finally getting to know each other as sisters, but Anna still wishes she could remember the magical times they had together when they were younger--skating and making snowmen, even in the middle of summer! An eager young troll claims he can restore the memories that Pabbie removed, but Elsa's not so sure. Maybe it's time to make new memories!

"When Max's new friend--a bug--gets sick, Ruby recommends taking her to the vet, just like any other pet"--

Jack and Annie continue to try helping Merlin the magician by searching for the secrets of happiness, and their magic tree house takes them to Antarctica, a wasteland where the penguins may know what to do.

Duck-and-dino siblings Feather, Flap, and Spike visit the pumpkin patch together to find the perfect pumpkin to decorate for Halloween.

Sharing with one's little sister can be an awful bother, but it has its rewards too.

"Max can't wait to eat his lunch--until he discovers it's gone! With help from Ruby, can Max find the missing meal?"--