Everything is about to get turned on its head.

'WandaVision' episode four lands on Disney+ tomorrow, and ahead of its premiere, we've been treated to a sneak peek look at what's about to go down.

Now, we'll presume since you're reading this, you're all caught up on the series so far (if you're not, what are you doing here?). At the end of episode three, we saw Monica Rambeau, aka "Geraldine", piss off Wanda and get thrown out of her perfect suburban life.

It seems that 'WandaVision' episode four will take us back to the moment before all of this happened, to when Monica entered Wanda's altered-reality.

From what we can see in the teaser below, Kat Dennings returns as Darcy Lewis. We haven't seen her since the events of 'Thor: The Dark World', and here she is analysing the events of Wanda's reality unfold on TV screens.

Aiding Teyonah Parris' S.W.O.R.D agent Monica Rambeau is Randal Park's character Jimmy Woo, reprising his FBI role from 'Ant-Man and the Wasp'. S.W.O.R.D., in the comics, is an off-shoot from S.H.I.E.L.D., who are more concerned about extra-terrestrial threats and lifeforms.

Here's the trailer for the next episode, which arrives on Disney+ tomorrow.

The nine-episode season of 'WandaVision' will culminate on Disney+ on March 5.