Division 15 is thrown into a panic when a seemingly drunk man that Gail and Traci brings in collapses from a mysterious illness and everyone is placed under a quarantine. Meanwhile, Andy and Swarek team to apprehend and book an unusual suspect in a brutal bank robbery - a man covered with blue dye. But will they uncover the identity of his violent partner? And as time ticks down, the squad grows increasingly nervous about the quarantine, with Gail worrying about her exposure to the sick man. Also, Dov's first date with a sexy bomb technician ends in a thrilling takedown.

In the course of pursuing a kidnapper, Andy and Swarek come upon a terrible accident with a woman pinned in her car. While Swarek tracks the missing child and his kidnapper, Andy stays behind with the critically injured woman. The rest of the 15th Division gets in the chase to catch the kidnapper, but Chris comes to blows with Dov over an indiscretion involving Gail. Meanwhile, Andy is galvanized to take bold action when she realizes life may be passing her by while she is making other plans.