Grace investigates a possible negligent homicide involving a bus accident that resulted in the deaths of three children, but the case takes a backseat when multiple tornadoes touch down in Oklahoma City. Stormy Grace serves as a first responder during the crisis and helps a trapped twister victim, who's aptly named Dorothy. Meanwhile, Rhetta gets trapped in the morgue; and Leon considers becoming a Muslim.

A murder trial results in the arrival of a big-gun Los Angeles defense attorney, whose work may bring to light the team's potentially sloppy investigative work, not to mention the muck of their personal lives---including Grace's lusty dark side. Meanwhile, Ham considers disclosing to Grace his heretofore hushed feelings for her; and Grace is slated to attend her nephew Clay's confirmation.