The President fumes over sea level rise, a botched hurricane forecast causes thousands of deaths. Professor Jensen investigates as her estranged daughter Leigh gets involved in a clandestine resistance group.
Leigh and Connie work with Chris at CalSea to understand the sabotage mechanism. The Governor of California leads a secession movement. Leigh, Connie and Abdullah join Olivia in Louisiana to implement a plan to undo the sabotage.
Connie and her student Abdullah must carry the decryption codes to Vancouver as another hurricane heads to Miami. The West Coast votes to secede but the Governor is threatened.