Hazel and Alfie have just moved in together as roommates. They've also just slept together, which was either a catastrophic mistake or the best decision of their lives--they aren't quite sure yet. Whatever happens, they need to find a way to keep living together without too much drama or awkwardness, since neither of them can afford to move out of the apartment.

Then Hazel's sister, Emily, and her wife, Daria, come for a visit, and Hazel's and Alfie’s feelings about each other are pushed to the side in the whirlwind of their arrival. Recently returned from abroad, Emily and Daria are excited for a new life in a new town, and ready to start a family of their own.