Set in New York City, "Day Eight" unfolds amidst the shadows of the Statue of Liberty and the United Nations as President Allison Taylor (Jones), alongside new chief of staff ROB WEISS (Chris Diamantopoulos), negotiates international security with OMAR HASSAN (Anil Kapoor), a determined Middle Eastern leader visiting the U.S. on a peacemaking mission. As the new day begins, an upgraded CTU operates under the command of M.B.A.-schooled, razor-sharp head honcho BRIAN HASTINGS (Mykelti Williamson), who supervises quirky CHLOE O'BRIAN (Mary Lynn Rajskub), expert data analyst DANA WALSH (Katee Sackhoff) and systems analyst ARLO GLASS (John Boyd).