Lives hang in the balance when a car crashes into a local street fair. Nancy is assigned to a new partner, while Rabbit teaches Marisa a lesson.

Boone's marital problems come second when an arm man starts to shoot in a rampage at an office. This problem forces Rabbit and Nancy to work together for the first time in over a year, with a injured hostages. Meanwhile, Marisa learns that she's more similar to Rabbit than she thought.