 In an attempt to connect with the hostage-taker, Matt Flannery (Ron Livingston), a negotiator for the FBI, reveals to him and his colleagues who are listening to his conversation, that he has been sleeping with his partner, Emily Lehman (Rosemarie DeWitt).Their supervisor Cheryl Carrera (Gina Torres) is concerned about how their relationship will affect their jobs.Each episode revolves around the main plot of a hostage situation and the subplot of Matt and Emily's relationship.