Nicolas Chartier’s Voltage Pictures has acquired international rights to the upcoming all-star ensemble comedy and will be opening talks with buyers at Toronto.

Ellen Barkin, Kate Bosworth, Demi Moore, Thomas Hayden Church, Ellen Burstyn and Martin Landau star in the story of a dysfunctional family that comes together for a wedding.

The film is in pre-production and will begin principal photography on September 6. Sam Levinson will direct from his own screenplay.

Voltage Pictures is also representing The Whistleblower starring Rachel Weisz, which screens as a special presentation in Toronto. Earlier this year the company won six Oscars for its in-house production The Hurt Locker.