Synopsis

While Barry is lost within the Speed Force, Iris, Kid Flash, Joe, and Vibe shoulder the responsibility of safeguarding Central City. Their vigilance is tested when a formidable, armored villain issues a dire ultimatum: obliterate the city unless The Flash makes his appearance. Faced with this crisis, Cisco makes a perilous choice, attempting to extract Barry from the Speed Force. But the Barry who emerges is irrevocably altered from the man who entered.