After armor-piercing bullets are found on the black market, the team decides to send Officer Brandt on an undercover mission to catch the criminals selling them. But when the mission goes awry, the squad utilizes a high-tech jacket to help track down Brandt and bring him back to safety. Meanwhile, a task force led by Murphy's ex-husband threatens Gideon's future.

After Gideon's father finds himself in trouble, he turns to Gideon for assistance. Meanwhile, Brandt and Goss work to track down the mastermind behind a huge grand theft auto case.