As a child falls asleep, twelve mice and a cat travel through the city visiting the night workers busy at their jobs. Hour by hour, from dusk till dawn, musicians, truckers, and bakers are among the people who keep the city humming. At seven o'clock, ballet dancers warm up for a performance. At midnight, a guard makes his rounds at the art museum. Near daybreak, vendors display their fruits and vegetables at the produce market. Office cleaners sweep, fire engines blare, police officers patrol, newspaper presses roll-all at night. The urban nightscape bursts with brilliant color and surprising detail. Views of the city sweep from soaring skylines to quiet streetscapes to the interior of an all-night diner. For dreamers and night owls alike, this is a delightful chronicle of the many nighttime activities that help keep the city going all day.