Nine months after it was announced that Vacation stars Chevy Chase and Beverly D'Angelo are reuniting for an ABC sitcom, the network has hired Arrested Development's Brad Copeland to write the script.

The untitled single-camera comedy project, which ABC already issued a production commitment on, follows two grandparents (Chevy Chase and Beverly D'Angelo) in their 60s, who are finally enjoying their Golden Years after raising a daughter who lives on the other side of the country with her two children. These selfish grandparents only get to see their grandchildren a few times a year, which suits them just fine, until they are suddenly forced to raise them on their own, due to circumstances out of their control.

Aaron Kaplan, who came up with the original idea for the series, is executive producing alongside Brad Copeland. The pair previously collaborated on the MTV series The Inbetweeners, a U.S. version of the hit U.K. show. Aaron Kaplan is a huge fan of Vacation, which lead him to reach out to Beverly D'Angelo with his idea for the show. She became attached early on, and brought the project to Chevy Chase, who signed on shortly thereafter. ABC quickly jumped on the project after the actors were attached, with their deals being finalized in January.

Brad Copeland's other writing credits include the TV shows NewsRadio, Grounded for Life and My Name Is Earl. He also wrote the big-screen comedies Wild Hogs, Yogi Bear and Coffee Town, along with the upcoming Knight Rider theatrical reboot.