Relates five adventures of Owl.

Little Hoot wants to go to bed early, like all of his friends do, and he is hopping mad when Mama and Papa Owl insist that he stay up late and play.

After Kludd's death, his mate Nyra is determined that her hatchling, Nyroc, will fulfill his father's destiny of viciously oppressing all of the owl kingdomes, but Nyroc, fed by scraps of forbidden legend and news of a place where goodness and nobility reign, defies his mother and his destiny.

Tiny is pregnant. Her husband is delighted. "You think this baby is going to be like you, but it's not like you at all," she warns him. "This baby is an owl-baby." When Chouette is born small and broken-winged, Tiny works around the clock to meet her daughter's needs. Left on her own to care for a child who seems more predatory bird than baby, Tiny vows to raise Chouette to be her authentic self. Even in those times when Chouette's behaviors grow...

A hoot owl, Ocax, rules Dimwood Forest and promises to protect the mice as long as they ask his permission to move about. Poppy is a deer mouse under the owl's protection, but when her fiance is killed by Ocax she defies the owl and begins a journey to a new place. Poppy wants to find a place where her family can live away from Ocax, but she has to do it without Ocax catching her.

Warm Hearts Day is approaching and Eva has been making lots of fun gifts and treats for her friends, but as the big party at the Old Oak Tree nears, she realizes that she has neglected to make any gifts for her family.

Bear and his friends persuade a bashful owl to play with them.

Soren and Coryn read the ancient legends of Ga'Hoole in order to find a way to prevent the victory of evil in their present world.

Eva is planning a big sleepover for her "hatchday" celebration, but one of her friends, Sue, does not seem to want to attend--so Eva must find out what is bothering Sue, and help her get over her first-sleepover jitters.

In this prequel, Ezylryb the Screech owl recounts the story of his life in the Northern Kingdoms--his rise through the ranks of the Killian Army, his brother's betrayal, and his friendship with Octavia the snake, to finally become a Guardian of Ga'Hoole.