Och, woke up late this morinng.. And the previous episode was the one I watched. How did it end? Synopsis please.
Lex is confused because Brainiac emerges out from his body into a fusion of both of them. Brainiac tells them it was because he had put a nanomachine within Lex which cured his cancer and gave him superhuman strength, but also retained Brainiac's consciousness.
JLU and Mrs Waller try to apprehend him, but the entire top of LexCorp building is transformed into a Brainiac headship. The founding members of JLU blast it out of the sky, but it was only a ruse, the Lex / Brainiac entity escaped underground.
Lex leads Brainiac to Cadmus where they stored the Dark Heart (alien super nanomachines) which the JLU defeated some episodes ago (which Plo Strax-Aix mentioned above). They absord the nanomachines and transform into a uber-Lexiac, and starts to create a machine that will absorb all data in the universe and destroy it, ultimately allowing them to recreate the universe as they see fit and rule over it.
The JLU stuck on the watchtower are unable to beam down because of the damage caused by the Ultimen the previous episode. The ones in New Mexico helping with the evacuation can't reach Lexiac in time. Only the founding members will be able to do anything in the time available.
They discover that Lexiac is creating a giant machine out of the Cadmus Washington DC office. They attack, but Lexiac creates a nanotech replica of the Justice Lords, the mirror version of the 7 JLU founders, to defend the building.
JLU wins the battle, so Lexiac comes out to take care of the situation personally, and ALL but Flash is rendered unconscious by Lexiac's energy blasts.
At first Flash seemed like he was about to stand up to Lexiac alone, but surprisingly... he fled!
Thinking it was fine, Lexiac resumes his work, but then from a different direction Flash comes running at high speed hitting him once. Some of Brainiac comes off Lex.
Before he could think, Flash runs by and hits him again. And again, and again until it seems like he's running around the world many times and arriving to punch Lex over and over again.
Then when Lex is down, he jumps on Lex and starts hammering him at superspeed with both hands. The rest of the League awakes, but before anything can be done, Flash and Lex explodes.
When the smoke clears, Lex is totally naked with no sign of brainiac on his body. Flash was vibrating so fast that he seemed transparent. Suddenly he disappears.
Thinking Flash had died, over-exerting himself, Superman almost killed Luthor with his heat vision, but stands down at the last moment.
But J'onn telepathically scans the area and discovers that Flash is still there, but he's weak. Shayera stumbles across a portal, which Flash descibes as a "Speed Force" and with the helps of the others, pulls Flash out of it. He said if he gets pulled into it again, he wont be coming out.
In the background, Mrs Waller calls the president to recall the airstrike.
Later, in an address to the other members of the League and the public, Superman announces that the Watchtower will be dismantled and the JLU will be disbanded. But Green Arrow reminded him of what they just they did and the world needs a Justice League. So they relent and say there will be changes. The Watchtower's fusion cannon will be decommissioned, and they will also create a base on Earth for better relations with the government.