Zoom comes to Barry and demands a race to determine who is faster, threatening to kill everyone Barry loves if he refuses. Wells realizes that Zoom stole a magnetar from Mercury Labs that will allow him to destroy every world in the multiverse if he and Barry can create enough energy from their race to power the device. When Barry refuses to back out, the team locks him in a containment cell for his own protection. The team develops their own successful plan to send Zoom back to Earth-2, but Joe is pulled in with him. On Earth-2, Zoom reveals to Joe that the man in the iron mask is the real Jay Garrick. Wally releases Barry to rescue Joe. Barry agrees to race Zoom if he returns Joe unharmed. As Barry and Zoom race, the magnatar begins to charge. However, Barry creates a time remnant of himself, who gives his life to stop the magnatar, while Barry takes out Zoom. Defeated, Zoom is then taken away by the Time Wraiths. The true Jay Garrick is revealed to be Henry’s doppelganger, which distresses Barry. Wells and Jesse return with Jay to Earth-2. Still feeling broken and defeated, Barry travels back in time and stops Reverse-Flash from killing his mother.