Bea thinks that adults behave strangely and worry about things that, to her, seem insignificant or plain idiotic. But, apparently, growing up is like a dose of measles that comes out of the blue and leaves you changed: some of the girls in her class have already made the change and are beginning to change, become silly and – worst of all! – get interested in boys. Even some of her friends! Bea has no doubts: she wants to stay the way she is, crazy about drawing comics, and without breasts!