Lydia is a researcher and Scott, a lawyer. They're roommates who get along rather well. For both of them, career comes first and love comes second. Coincidentally, both of their older sisters are overbearing, meddlesome and constantly trying to set them up with their friends. And so they come up with a plan to pretend to be lovers in front of their sisters. But although they're just roommates, when they attend a fancy party together, Lily realizes it's the first time she's actually had fun on a date, and she starts to see Scott as more than just a friend.