But Jonn wont be alone during his off-world trip, as Kara (Melissa Benoist) tags along.

That episode feels like an Indiana Jones movie when I read it, Benoist tells EW.

I immediately gave props to all the writers for that.

Far From the Tree

Credit: Dean Buscher/The CW

Its such an adventure.

Its a really fun and epic adventure.

Those sets were amazing.

Fortunately, Kara can relate on all fronts.

You learn a lot more of the backstory behind what happened to Maggie.

You understand where shes really coming from and its heavy.

Floriana just slayed it, like she just did so amazing in that episode.

Check out this sneak peek from Mondays episode:

Supergirlairs Mondays at 8 p.m.

ET on The CW.