When a young Latina woman is brutally murdered, Intelligence suspects she may have been working as a drug mule. With Antonio leading the case, the team's investigation takes them into the grim world of meat processing, and the discovery that there may be a different motive behind her death.

Intelligence investigates a string of bombings targeting members of the media. Racing against a ticking clock, the team enlists Firehouse 51 to help examine the devices and prevent the next attack.

The crossover continues on Chicago Fire S06E013 Hiding Not Seeking (II).

In an attempt to dig himself out of a hole and save someone close to him, Antonio crosses a line that puts the entire team at risk.