Ep 19. The Once and Future Flash

Barry Allen, also known as The Flash, is devastated after the death of his girlfriend, Iris West, and goes to the future, hoping to find a way to prevent her death. When he arrives, he discovers that Central City is in ruins, and that his team has disbanded. He also discovers that his arch-nemesis, Savitar, is still alive and more dangerous than ever.

Desperate to find a way to change the future, Barry seeks the help of his future self, who is now a brooding and bitter man haunted by the loss of Iris and the failure of his team. Together, they try to uncover the identity of Savitar and figure out a way to defeat him before he destroys everything they hold dear.

Meanwhile, back in the present, Cisco and Julian team up to track down a metahuman who may hold the key to defeating Savitar. But as they get closer to their target, they begin to realize that there may be more to this metahuman than meets the eye, and that their mission may be more dangerous than they ever could have imagined.

As the episode unfolds, secrets are revealed, alliances are formed and broken, and the fate of Central City hangs in the balance. It's a race against time as Barry and his team try to change the future and save the ones they love, but with Savitar always one step ahead, it may be too late for them all.