The Flash gets an assist from XS. Meanwhile, CCPD enlists Chester for help when a mysterious device is found at a crime scene.

Barry and Chester may have found a way to stop the “Black Flame” from hurting anyone else meanwhile Caitlin decides to handle a situation on her own, possibly putting more…

Barry’s desire to keep Team Flash safe is tested when Frost recklessly courts danger as she tries to stop the “Black Flame,” meanwhile, Iris tries to help a teen girl…

Barry and Team Flash get closer to figuring out the Fire Meta but no closer to finding him; Iris, needing a distraction, follows a story to Coast City.