Fresh off the excitement of her camping trip, Yotsuba initiates a very productive session of sandbox play in which she instructs Fuuka how to properly run a bakery. But even more exciting is a visit from Grandma! Yotsuba learns how to value and enjoy cleaning, how not to be rude when hoping for souvenirs, and most important, how to cope when Grandma leaves. But don't worry, she'll be back someday!

Yotsuba is going to school...almost! Fuuka says at school you read and write and do tests! A test is where you write your name at the top and answer questions. Yotsuba got alllll the questions right, so Fuuka gave her a perfect score! And, and, you get to paint with big-girl paints like Ena, wear a backpack, make picture books, and collect pretty rocks! School is gonna be great! …Right?

Ohhhhh! Yotsuba's back! Today, Yotsuba was drawing Jumbo, okay? That's Daddy's REALLY, REALLY BIG friend. He's real nice and I guess a big baby. But he's too big to draw in Yotsuba's sketchbook! So Yotsuba drew Jumbo on the street in front of our house! Cool, huh? But Ena's friend Miura, who has wheels on her feet, said Yotsuba was bad at drawing...she's wrong, right? RIGHT!?

Oops! Your shoe! Your shoe! Your shoe came untied! But don't worry! Tora taught Yotsuba how to tie a bow like a butterfly! Now Yotsuba can tie Juralumin's ribbon aaaall by herself. Huh? Why are Yotsuba's hands blue? Well, see, there was this reeeally pretty blue paint...and Yotsuba thought Daddy would want his stuff to be reeeally pretty blue too... Are Yotsuba's hands gonna stay blue forever and ever?!!

*sniffle* Yotsuba thinks grown-ups are mean. Daddy plays all kinds of neat games with Yotsuba, but he ALWAYS WINS! Even when Yotsuba TELLS him to be paper in Rock-Paper-Scissors, he doesn't listen! Even then! Yotsuba never, ever wants to be a big meanie grown-up, nuh-uh! But grown-ups get to buy ice cream all by themselves, so...um...maybe it's okay to be a grown-up sometimes?

Jake Blatowski can't wait for high school--basketball, calculus, and a cafeteria that isn't under investigation by the health department.But he'll have to wait: A computer malfunction has assigned him to the fifth grade!It's bad enough that he bangs his knees on the desks or that Miss Percy is going over long division . . . again . . . but Jake has to sit next to Dana Volt, a perpetually surly troublemaker determined to make his life a living hell.Worse yet, Dana secretly belongs to a coalition of girls that protects humanity from the horde of deadly monsters plaguing the city--monsters that have chosen Jake as their next target!Jake's no hero; he just wants to make it to varsity tryouts. But now the impulsive and moody Dana is the only one who can save Jake from certain death--and Jake is the only one who can save Dana from herself.