Well we've finished this seasons crossovers. And I very much enjoyed getting to watch double Tyler Hoechlin, so thank you for that Supergirl. However, I don't know what was going on with me (I blame Hoechlin), but my discussion was a hot mess. I could hardly remember what had happened, like ten minutes prior. I don't know what was going on with me. But, I'm sorry about whatever it was. I almost deleted it and started over about halfway through, but I just kept on keeping on.
So Oliver somehow figures out very quickly that Superman (or, well, evil Superman) is actually the doctor and has made himself Superman in this universe. He and Barry distract him so they can go and find Cisco in the hopes that he's able to get them to Earth 38 so we can get Superman's help. Once he and Lois find out that Kara is in danger (she's being locked up), they agree to head over to Earth 1.
Real Superman and Oliver fight evil Superman, while the rest of us go and get the book. They find it and give to real Superman who is able to restore everyone back to their original selves. But, they know that doctor is just gonna do it again, so they come up with a plan to slow down time. And, in the interim while time is slowed, Oliver shoots the book (evil Superman has it) and it sort of electrocutes him. And he turns all pruney, but things seem to be back to normal. Also, Lois showed up with a bunch of people I don't know and they helped the fight.
And then we end with Batgirl calling Oliver and telling him that the doctor is back at Arkham, but this time as a prisoner. But, he's made a friend in the next cell, which is supposed to be bad, but I assume I just don't know the lore for this.
Oh, and Lois is pregnant and Clark proposed. So, he's giving up being Superman for awhile and leaving Kara to take care of things.