College student David Rain rents a room in an unusual boardinghouse full of clay dragons, not realizing that they, along with some lively squirrels, will help jumpstart his writing career.

A happy-go-lucky Bird and a cautious acorn-collecting Squirrel become unlikely best friends when Squirrel loses his winter stash while saving Bird from Cat, prompting a zany road-trip adventure in search of warm weather and plentiful food.

Crossing the Great Mountains to return home, Bird and Squirrel rescue a baby bear from wolves before Bird suffers a bonk on the head that gives him amnesia, a situation that tests Squirrel's ability to protect his friends.

Toaff, a curious gray squirrel, wonders why he must avoid humans and red squirrel rivals before a winter storm separates him from his family and challenges him to make his own way in the world.

Oscar Westerwit, a squirrel who loves baseball and Broadway musicals, fights back when a gangster rat named Big Daddy Duds and his thugs move uptown in the year 1900, invade Central Park, and evict Oscar and his animal friends from their homes.

When Red has to go spend the night helping Grandmole, Bird and Squirrel are put in charge of taking care of Squirrel's daughter, Birdie. But Birdie wants to go with her mom because staying home is so BORING! So Bird convinces Squirrel (despite his better judgment) to have some fun while Red is gone. And as far as Bird is concerned, nothing is more fun than setting off in search of the most elusive creature of the forest: Bigfoot! And even though Squirrel...

Led by Duncan "Gluestick" Dewey, the NERDS team uses brain power and courage rather than gadgets when they face off against supervillian Simon, his band of savage squirrels, and Albert, a middle-aged computer genius who lives with his mother.