Alison Brie, Lizzy Caplan, Martin Starr and Geoffrey Arend have boarded the indie romantic comedy Save the Date, from The Kids Are All Right producer Jordan Horowitz.

Mike Mohan is directing from a script he co-wrote with Jeffrey D. Brown and Egan Reich.

The story focuses on two sisters, one who's ambivalent about her future (Lizzy Caplan) and another more at peace with life and long-term commitment (Alison Brie).

Geoffrey Arend's character is passionate about music and cares tremendously for Lizzy Caplan's character.

Production is scheduled for July in Los Angeles.