Rachel and Becca are stepsisters, living far apart, with little in common. Rachel is the successful one: happily married with three children and a big house. Becca, meanwhile, lurches from one dead-end job to another and has given up on love. The two of them have lost touch, but when Rachel doesn't come home one night, Becca is called in to help. As Becca begins to untangle Rachel's secrets, she is forced to confront some uncomfortable truths.