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.

Ragweed, a young country mouse, leaves his family and travels to the big city, where he finds excitement and danger and sees cats for the first time.

Poppy, accompanied by her troublesome son Junior, his skunk friend, and Uncle Ereth the porcupine, responds to a summons to return to her ancestral home, Gray House, to save the mice there from destruction by a bulldozer.

The first new book about Poppy in more than ten years, from Newbery Medal-winning author Avi with illustrations throughout by Caldecott Medal-winning artist Brian Floca. How did Ragweed and Poppy meet and become friends? This book tells their hilarious story! Adventurous golden mouse Ragweed is on a freight train leaving the city of Amperville. On his journey he meets Lotar, a young, annoying, and lost raccoon who's desperate to reunite with his mother....