On the anniversary eve of the 9/11 terror attack, New York swelters under a heat dome of record temperatures. Even the global leaders assembled at the UN HQ are forced to admit that the climate crisis has reached boiling point and the world's time is running out. That same day, at precisely 5:25 p.m., everyone on Manhattan Island - every man, woman and child, including all the world leaders at the UN - falls unconscious. Everyone that is, except for Samantha Rossi, a single mother reeling from devastating personal news and Nick Lockwood, a wounded NYPD detective who wakes from a coma just as the City That Never Sleeps falls into one. Rossi's first concern is her daughter. Lockwood's is his city. As night draws in, they must work together to unravel the mystery of what has happened and why. Each must decide how far they will go and what lines they will cross to save what matters most to them.