Lets start on Earth, since the episode splits its time between there and a spaceship.
(As a New Yorker, I totally understand this impulse.)
They use lasers, remember?

Credit: Mitch Haaseth/ABC
Which makes them think itll be easy to get what they want on this world.
Theres one supply they cant find at the bodega, though: Something called PEGs.
So they go in for a robbery.
Its an interesting twist.
Dana realizes theyre talking about crystals, and directs them to a drawer full of topaz and quartz.
But theyve underestimated Melinda May.
Its a video showing Sarge and Jaco on an alternate Earth where the sky is collapsing.
Wherever these people come from, Benson ominously explains, I think they destroyed it.
Meanwhile, in space!
Luckily, it turns out Fitz hasnt actually been brainwashed or turned into an alien puppet.
But hey, on the plus side, at least Enochs back!
Ive missed having him around.
Thats when the tables turn.
Enoch opens the spaceship doors.