The Neighbors (2012)

S1E5 Halloween-ween

Since landing on Earth, the Bird-Kersees and their alien crew have seen Halloween as a danger, erecting a barrier at the entrance of Hidden Hills to keep costumed children out. In contrast, the Weavers are eager to experience their first Halloween in the suburbs and want to welcome everyone into the community for the festivities. They try to educate the aliens about the tradition of trick-or-treating. Meanwhile, Marty and Debbie's worries come true when Amber, Max, and Abby turn down their family costume ideas.