Sarah asks for help from her younger sister Coco when she learns that she cannot conceive a child herself. Can this two sisters put their differences aside and have a baby together? Coco gives Sarah's idea a try and moves from a friend's couch to her sister's loft. When she arrives, she discovers she is going to be moving into an unfinished bedroom.
When Talia drops in on Coco unexpectedly one too many times at the loft, Coco decides it's time to get out of the house and get a job. She quickly lines up a job walking a neighbor's dog and her plans to build a dog-walking empire quickly fall apart when Sarah reports the neighbor to their co-op board as pets are not allowed in the building. Later that evening, Sarah feels guilty for her actions and takes solace in Marcus's arms and accidentally spends the night at his place, breaking one of their cardinal rules.
Sarah is planning a party to celebrate the new book of one her most successful authors. However, when the author decides to read the latest draft of his book's sequel at the party, both Sarah and the young listeners discover that their favorite character may not live happily ever after. Meanwhile, an old friend of Coco's comes to town for a quick fling, but upon discovering his stay will be short-lived, Coco realizes she may not be okay with his plans.
Sarah convinces Coco to make the dreaded trip home by promising to defend her against their parents' harsh criticisms. As expected, however, the family gathering soon becomes a Coco-bashing session. Is Sarah willing to taint her parents' perfect image of her to take the attention away from Coco?
Sarah and Coco try to hammer out an agreement through a surrogacy lawyer but each has trouble agreeing to the other’s terms.