Andrew and Zelda break with their respective traditions and decide to throw a joint Halloween party, much to the dismay of Stu and Stephie, who feel like they are losing their best friends. Meanwhile, with Big Bird looking for a solid promotional opportunity to boost the profile of the company, Henry takes it upon himself to enlist the help of Ray Parker Jr. to attend their annual Wallflower Halloween party.
Elenco: Ben Feldman , Cristin Milioti , Henry Zebrowski , Lenora Crichlow , Christina Kirk , Katey Sagal , Parvesh Cheena , Hong Chau , Nancy Friedrich .