The Flash’s episode “The Once and Future Flash” followed in that grand tradition of speculative fiction narratives that see a hero travel to the future and find the darkest possible timeline.
If there was one thing that “The Once and Future Flash” did a very good job of showcasing, it was that Iris (Candice Patton) is the rock upon which Team Flash has been built.
In this case, as is the basic trajectory of The Flash now, Barry (Grant Gustin) found a pretty sad state of affairs in 2024.