MUBI has shared the official trailer for Hal & Harper, the upcoming family drama led by Emmy winner Mark Ruffalo, Riverdale alum Lili Reinhart, and series creator Cooper Raiff. This marks the latter’s first TV project, following his previous starring roles in 2020’s Shithouse and 2022’s Cha Cha Real Smooth, both of which he wrote and directed.

The show is scheduled to debut on October 19 with the first two episodes on MUBI. New episodes will be released weekly on Sundays through November 30.

Check out the Hal & Harper trailer below:

What happens in the Hal & Harper trailer?

The video introduces Ruffalo as the father of the titular characters, who announces that he’s going to have a new baby with his girlfriend. This revelation leads his adult children to reflect on their lives, as the siblings must confront their past and the codependent bond shaping their adult lives. The trailer highlights how Hal and Harper will deal with their father’s news, as well as a glimpse of some of their emotional moments with him.

Hal & Harper is created and directed by Raiff, who is also executive producing alongside Reinhart, Clementine Quittner, Daniel Lewis, and Addison Timlin. The ensemble cast also includes Betty Gilpin (GLOW), Havana Rose Liu (Bottoms), Alyah Chanelle Scott (The Sex Lives of College Girls), Christopher Meyer, and Timlin. The show is produced by Thomas Hartmann.

“It is a wry and heartfelt 8-episode series about two siblings whose closeness is both their comfort and their curse. Hal (Raiff) and Harper (Lili Reinhart) have built their adult lives side by side in Los Angeles, tethered by a lifetime of inside jokes and shared pain,” reads the show’s official synopsis. “When their father announces he’s having a baby with his girlfriend, Kate, it forces the siblings to reexamine their past and reckon with the versions of themselves they’ve carried into adulthood. As the lines blur between closeness and codependence, memory and reality, Hal & Harper explores how a bond formed in childhood can shape every relationship that comes after—for better or worse.”