After an unexpected guest from the future, Nora West-Allen, appears at their home, Barry and Iris must figure out how to get her back to the future without disrupting the timeline - even more than she already has. Team Flash must work together to send Nora back, while simultaneously fighting off another villainous meta.
Did You Know?
Ralph mentions the possibility of Barry creating a timeline where he (Ralph) died in the particle accelerator explosion. Before Barry created and undid Flashpoint, Ralph did die in the particle accelerator explosion. See more
Caitlin says that Gridlock's powers won't work in zero gravity because zero-G means no kinetic energy. Bodies have kinetic energy by virtue of being in motion and bodies can certainly be in motion in zero-G. For example, astronauts. See more
Okay, let's back up. My name is Nora West-Allen, the fastest woman alive. When I'm from, 30 years from now, I'm the guardian of Central City. I'm a speedster, just like my dad. People call me XS. Every day, I hope to live up to the legacy of The Flash... But I've still got a long way to go.