In the mid-1970s Sunny Lewin is back, star of her personal show, facing the prospect of Middle School, and dealing with the problems of her somewhat dysfunctional family--in particular her older brother, Dale, who has been sent off to a military academy because of his delinquent behavior.

"Babymouse becomes an influencer after she tries out a new whisker style and posts a tutorial online"--

Babymouse joins the school Film Club and writes the greatest cinematic masterpiece of all time! But when the movie gets shown to the entire school, will it be a box office hit or a flop?

Babymouse discovers Squish, a new species of amoeba, while working on a school science fair project.

When Babymouse decides to become president of the student council, she learns that there is more to running for office than being famous and in charge.

Babymouse tries out for the middle school play, but instead of landing the lead role, she gets stuck with playing a clown with one line of dialogue.

When Babymouse's art class goes on a field trip to the museum, she decides to test her freedom by exploring the Big City without a chaperone.