Two beavers thwart an evil plot by penguins who plan to turn Beaver Island into a frosty resort.

Summer vacation on an almost private island gives the Aldens a challenge. Henry, Jessie, Violet and Benny used to live alone in a boxcar. Now they have a home with their grandfather and are spending the summer on their own private island. There is a mysterious stranger on the island with a secret--but that's not the only surprise in store for the Boxcar Children.

Mouse enjoys living on his island but feels that something is missing from his life until the day he performs a daring rescue and acquires an unlikely friend.

Ace and Bub's plans for a quiet vacation are put on hold when they are stranded on an island where their nemesis, Walter, has stirred up trouble between the birds and the rabbits.

While visiting a friend of their grandfather's on Sullivan's Island, off the coast of South Carolina near Charleston, the Boxcar Children encounter mysterious activities related to rumors of a buried pirate treasure.

As Moana and her grandmother help prepare for a festival, Moana decides to make a gift for her father, but she does not count on the less-than-helpful assistance she gets from Pua the pig and Heihei the rooster.