Pleased to find a small, empty box, Bear calls it "the greatest thing ever" and decides to take it to his friend Mouse. Along the way, he meets Monkey, Owl, Fox, Elephant, Squirrel, and Rabbit, but no one really appreciates his find. Bear begins to doubt his earlier enthusiasm, but Mouse has the last say when he looks inside the little box. "It is the greatest thing ever," he tells his friend. "Thank you, Bear."