Part 1

Alexa's plan to hide her cancer from her classmates and start high school like everyone else is totally doable ... until she starts losing her hair.

There's a rumor going around school that someone in the class has cancer. Katie tries out for the basketball team, and Lori starts working from home.

After landing the lead in the school play, Katie's left wondering whether she actually earned it. Jennifer asks Lucas to baby-sit.

Now that Alexa's secret is out, everyone's being unbearably nice -- even Gwenny. Jennifer and Jack invite themselves over to watch the World Series.

To kiss or not to kiss? Katie's new life as a thespian has Alexa feeling a little left out. Jennifer accuses Lori of stealing her thunder.

Alexa's got such a great support system at the hospital that Katie isn't sure where she stands. Lori pours her anxieties into baking.

The doctors order Alexa to stay home, but she can still come to school -- on an iPad. Jennifer works overtime to convince Jack her job is cool.

Alexa insists on cooking Thanksgiving dinner, but Lori has trouble letting go. Katie's desperate to connect with her dad on a deeper level.

Dave can't wait to show Lucas his alma mater. And with her family away for the weekend, Alexa's ready to break all the rules.

Lucas longs for "bro time" now that Dylan and Alexa are hanging out. Dave's nose detects a cat ... and he's not wrong.

Alexa's first high school dance is right around the corner. But a risky flu outbreak means she might not be able to go.