Barbara and David Kahn are trendy Manhattan art dealers whose cozy life together is upended by Barbara’s goody two-shoes sister, Trudy, and uptight CPA brother-in-law, Martin. En route to intervening in their daughter’s promiscuous college lifestyle, Trudy and Martin precipitously dump the ladies’ eccentric mother, Sophie, on the Kahns’ doorstep. When Sophie takes an interest in elderly artist Maurice Koenig, everybody’s life is turned upside down.