Koiwai and his four-year-old daughter Yostuba have just moved into the neighborhood, but is the neighborhood ready for this lively child?

The secret's out! Behind Jumbo's rugged exterior lies the heart of a florist? But after he holds a sale at the family flower shop, Yotsuba and her father will be left with more bouquets than they can handle. Yotsuba takes to the streets as Flower Cupid, but this little angel will have to hurry if she wants to make it in time for the fireworks festival...

Yotsuba meets a Robot at Ena's house and would like to know more about its behaviors.

The always-enthusiastic Yotsuba experiences a number of firsts in her young life, including riding a bike and visiting a ranch.

"Beep-beep-beep! Yotsuba here, and riiiight on schedule! Every day is a fun day, and today's gonna be even funner than the rest. We're busy, busy, busy! We should write down a schedule so we don't forget what we gotta do … like go to the bathroom! And go to the berry gair … um, teddy bear store with Daddy! And try to fly! Omigosh, Yotsuba missed toilet time already! Noooo! What to do?! What to do?!" --