Marty Weaver just wants the best for his wife, Debbie, and their three kids. That's why he's moving them to Hidden Hills, New Jersey, a gated community complete with its own golf course.
After convincing the Bird-Kersees to let their kids try "human" school, the Weavers take them on their first excursion outside Hidden Hills - shopping for back-to-school clothes at the mall. They survived the trip to Earth, but will the mall be too much? Meanwhile, Debbie and Jackie have doubts about each other's true intentions.
Marty and Debbie decide to make plans with their human friends after Larry and Jackie have become too entangled in their daily lives. The Weavers do their best to un-invite the Bird-Kersees, explaining they're afraid their friends won't be accepting of the aliens. But that doesn't stop Larry and Jackie from crashing Marty's' poker night and Debbie's girls' night on the town -- with hilarious results.
Marty and Debbie prepare the Bird-Kersees for their kids' first day of human school. They're especially worried that little Dick Butkus will get picked on, but their anti-bullying advice backfires in ways they never anticipated. Meanwhile, Larry and Jackie are getting tired of the Weavers' endless parenting tips.
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. The Weavers, on the other hand, are excited about their first Halloween in the suburbs and want to open the gates of the community to celebrate. They do their best to explain the ritual of trick-or-treating to the aliens. Meanwhile, Marty and Debbie's fears are realized when Amber, Max and Abby reject their family costume plans.
Marty and Debbie dislike the kids' entitled attitude toward Christmas and decide to return the gifts and use the money for a family vacation; when the Weavers realize the aliens already opened all the presents, Larry Bird must save Christmas.
Larry Bird helps Debbie deal with PTA politics and its officious president, Linda; Jackie's competitive nature kicks in when she helps Marty coach soccer.
At the school dance Reggie attempts to win over Amber, Debbie tries to recapture the magic of her first encounter with Marty, and Jackie hopes to be romanced by Larry.
Debbie advises Reggie to commit to Giselle so he proposes marriage, which incites Jackie's wrath. Meanwhile Amber decides to break up with her boyfriend.
Marty offers to teach the Bird-Kersees how to drive; Amber regrets opting for lessons from a driver's ed teacher when Ms. Porsche turns out to be very unconventional.
After the Bird-Kersees go see a Broadway show, Larry decides to create a musical of his own; an emergency phone call could expose the Bird-Kersees' true identities.
Debbie is ecstatic when a businesswoman offers to help revitalize her purse business; Jackie jumps in to help, but soon she and Debbie realize they are in way over their heads.
During a trip to Atlantic City, Marty learns that Larry can count cards -- and see through them; Jackie confesses that she has always wanted a human wedding; Dick Butkus receives an ominous call from his grandpa.
