Celia Green (Academy Award nominee Patricia Clarkson) is at a crossroads. She and her husband Malcolm (Chris Mulkey, Captain Phillips), have been coming to their vacation house at Lake Tahoe for more than thirty years, and yet Celia now feels that something in her life is missing. Gathering her two adult sons (Zachary Booth, Keep the Light On, and Joseph Cross, Lincoln) and their partners for a rare weekend together, Celia hopes to come to terms with the past that the house represents and her desire to move forward. Amidst an eclectic assortment of gusts and drop-ins both young and old, and a catastrophe that upends Celia's meticulously devised weekend, the Green family must learn to strengthen the ties that bind them even if it means letting go of the things they thought were important. A dark comedy of manners, Last Weekend is a film about the end of an era for a family - and the steps we must often take in order to create new beginnings.