The Nap refers to the event caused by Jazz Bashara.
Background[]
In her attempts to save the city from a dangerous Brazilian gang, O Palácio, by destroying Sanchez Aluminum, she and Dale Shapiro accidentally exposed the entire city to chloroform gas created by the methane, oxygen and chlorine stored in the same room as a giant oven. The smeltering company having a direct line to the city as well as Life Support not being able to detect complex chemicals in the air [1], led to the whole city being knocked unconscious and on the brink of death as in large doses for extended periods of time, chloroform can be deadly.
No one died because of The Nap but everyone in the city as well as the workers on the train outside, were all effected.
Only the team and two EVA guild members who had been outside the city were awake during this time.