THE FINAL RUN – The Flash (Grant Gustin), the fastest man alive, is tasked with his greatest challenge yet, to save the timeline and save existence. 老友记 old and new gather for an epic battle to save Central City, one last time
Barry speeds over to Green 《绿箭侠》 for help in stopping the Dominators. Realizing the battle is bigger than they thought, they track down the Legends of Tomorrow, and Barry and Cisco bring back a secret weapon – Supergirl.