Leah is married to Orthodox rabbi, Benjamin Lever, whose brother, Jake, is a successful cardiologist and non-practicing Jew. Jake is stunned when Benjamin dies suddenly, but not as stunned as when he is told that, under an ancient Jewish Law, he is expected to marry the childless Leah to carry on Benjamin's name. The only alternative is to go through a ceremony where Jake must deny his brother's existence. For Jake, that's unthinkable, so impulsively he suggests to Leah they get married and maintain a secretly platonic relationship. Eager to pursue her own dreams, Leah gladly accepts.
Their oversimplified plan to live separate lives under the same roof proves challenging. The harder they try to disguise their "pretend" marriage, the more their appreciation for each other's worlds grows and out of understanding, real love develops.