Fish ends up having to don a Santa suit on Christmas Eve to catch a robber; Yemana romances a lovely mugging victim; a frustrated department store shopper is arrested.

While the city is dealing with a first-stage smog alert, Det. Batista arrests a graffiti artist defacing city property with vulgar messages. When Harris and Fish are called out to the Brooklyn Bridge to talk down an attempted jumper, Fish gets injured due to passing out from the smog and got lost on his way to the hospital.