Ep 19. Hereafter: Part 1

In Justice League Unlimited season 2 episode 19 titled "Hereafter: Part 1," the members of the Justice League are faced with one of their most harrowing challenges yet. When a mysterious creature attacks Metropolis, Superman takes it upon himself to stop it, but in doing so, he disappears without a trace.

As the other members of the Justice League attempt to locate Superman, they soon discover that he has been transported to a future where Earth has been destroyed and the few remaining humans are struggling to survive. With the help of Vandal Savage, who has somehow managed to survive into this bleak future, Superman tries to find a way back to his own time and stop the cataclysmic event that led to the downfall of humanity.

Meanwhile, the Justice League on present-day Earth must race against time to stop the creature that sent Superman hurtling into the future before it can do any more damage. But with their strongest member MIA and the stakes higher than ever before, the team faces its toughest challenge yet.

As the two storylines unfold in tandem, viewers are taken on a thrilling ride through time and space as the members of the Justice League fight to save the world in multiple time periods. With stunning animation, pulse-pounding action, and a gripping storyline, "Hereafter: Part 1" is an unforgettable episode of Justice League Unlimited that will keep viewers on the edge of their seats from start to finish.

Fans of the series will not want to miss this powerful and exciting episode, which features all of their favorite Justice League characters in an epic battle for the future of the world. With high stakes, heart-pumping action, and unforgettable moments, "Hereafter: Part 1" is an instant classic that stands as one of the best episodes of the series. So buckle up and get ready for a wild ride, because this episode of Justice League Unlimited is one you won't forget anytime soon.