Just when you thought you were starting to grasp how the upcoming Crisis on Infinite Earths crossover might play out, Arrow is here to take a quick turn, unraveling almost any theory you could possibly have. As the CW series continues its final season, the episodes are designed mainly to continue setting the stage for the massive Crisis event that kicks off in December.

However, after the latest episode--titled "Leap of Faith"--everything had changed. Warning: The following contains spoilers for Arrow Season 8, Episode 4, "Leap of Faith." If you don't want to know what happened, stop reading now.

In the final moments of the episode, Mia (Katherine McNamara), William (Ben Lewis), and Connor (Joseph David-Jones) were transported from their future to present day, right in the middle of the Arrow cave. It's there that they lay their eyes on Oliver Queen (Stephen Amell) and the rest of the team. "Dad?" Mia asks through tears, realizing she's meeting her father for the first time.

This is just the latest twist in the Monitor's (LaMonica Garrett) plans for Oliver and the multiverse as a whole, with Crisis on Infinite Earths getting closer. After sending Oliver on several missions, he's now brought the Green Arrow his own children to help in the upcoming fight.

We already knew the crossover would be loaded with familiar faces, including multiple Superman, along with the stars of The CW's other superhero shows--from Legends of Tomorrow to Black Lightning. Adding the future Team Arrow to the mix, though, is a wrinkle Oliver is likely going to have some trouble with. After all, how focused will he be on the task at hand if he's also watching over his son and daughter on the battlefield?

Of course, it also makes you wonder what will happen after Crisis on Infinite Earths. We already know a spin-off of Arrow is being developed with Mia at the center, joined by Dinah (Juliana Harkavy) and Laurel (Katie Cassidy Rodgers). Is it possible that series could be set in present-day, which would mean Mia is sticking around long-term? That's a question that will hopefully be answered before the Arrow series finale.

Arrow airs Tuesdays on The CW.