Penelope, a 3-year-old blue koala girl who is a bit of a scatterbrain (tête en l'air), is full of curiosity and takes action with interest in everything. Together with her favorite rabbit plush toy, Dudu, she spends her days happily playing with friends and sometimes getting into mischief. This short anime faithfully recreates the world of the original picture book, depicting fun-filled, curiosity-driven everyday life.