Penny is still suffering from mild concussion after she fell down the stairs, so her doctor gives her a prescription helmet to wear.
Marty and Debbie prepare the Bird-Kersees for their kids' first day of human school, and they're especially worried that little Dick Butkus will get picked on.
They survived a trip across the universe, but will a trip to the mall be too much for the Bird-Kersees?
Since arriving on Earth, the aliens - led by the Bird-Kersees - have viewed Halloween as a threat and have set up a barrier at the gates of Hidden Hills to prevent children dressed in costumes from entering the community.
Increasingly comfortable exploring the world outside of their gated community, the Bird-Kersees ignore the Weavers' concerns and decide to go to into the city to see a Broadway show.