Annette Bening, Julianne Moore, Josh Hutcherson, Mia Wasikowska, and Mark Ruffalo in The Kids Are All RightTHE KIDS ARE ALL RIGHT

In general terms, explaining what director Lisa Cholodenko's The Kids Are All Right is "about" is a pretty easy task: 18-year-old Joni (Mia Wasikowska) and 15-year-old Laser (Josh Hutcherson) - the children of a contented and devoted lesbian couple (Annette Bening's Nic and Julianne Moore's Jules) - arrange a first meeting with their shared sperm-donor father (Mark Ruffalo's Paul), and through several more meetings, watch as his casually disruptive presence gradually, irrevocably alters their family dynamic. Yet while this is an accurate, if simplified, plot synopsis, it doesn't come remotely close to explaining what this buoyant, original, altogether extraordinary dramatic comedy is actually about.