Ginger and her classmates learn about the changes their bodies go through during puberty.

Rudy compares her pubescent body to those of her classmates and worries that she will not go through puberty.

Eddy gets a zit, which Double D tells him is a natural part of growing up. Eddy is embarrassed about it and tries to hide from the other kids. Ed finds the zit funny and gets Johnny to come over and see it, to Eddy's dismay.

After smoking tobacco for quite some time, the gang (Robin, Lily, Ted, Marshall, and Barney) starts to have health issues. Lily's voice becomes hoarse, Ted is easily fatigued due to the reduced flow of oxygen in his blood stream, and Arthur Hobbs, in an extreme situation, has a heart attack.

Vivian gets measured for her first bra.