The family drama keeps him away from the Legion farewell tour.
Their companions werent removed from stasis because theyd contracted the Blight.
(Hello, writers room, I see you directly responding to viewer complaints about the missing Legionnaires!)

Credit: Bettina Strauss/The CW
But their vitals are back to normal, which means they kept the Blight from happening in the future.
The mission over, its time to return to the 31st century.
Also, Imra needs to get back to keep the Titan Alliance going and prevent intergalactic war.
Then he gives him a jar of 31st century Earth dirt, which delights Winn.
(Hey, better than Mets cards, amirite?)
Brainy then turns off his human glamour machine, and they awkwardly hug.
He says being back with her and, uh, everyone else means the world to him.
Then news about the Lena attack interrupts whatever Mon-El was about to say.
Hes conflicted, that one.
She also reluctantly tells Alex that Rubys stashed in Lexs camouflaged mansion.
Geez, lady, if you see something, say something!
Then plants start to wilt, both heralding Reigns arrivalandinforming the DEO that she absorbed her sisters powers.
Reign enters the house and modulates her voice to sound like Sam, calling for her daughter.
Instead, she finds Supergirl waiting with an electric harness, which she easily breaks.
You are everything that I wasnt.
Reign hisses, What did you do for your daughter?
She gasps out her forgiveness before Supergirl blasts Reign through the house and retreats.
That tricksy Brainy planted a listening gadget in Winns dirt.
(And he thinks hes a 1.42 level intellect, our blue friend scoffs).
I think we all see where this is headed.
(Okay, we saw where this was headed like eight episodes ago.)
Wow, this is all…convenient.
I expected a bit more friction here, to be honest.
(Next: Did you catch that sweetSupermanhomage?)
James also tries to enlist an additional source of help: Lenas homegrown Kryptonite.
Lena points out that thousands of things can kill humans, but they dont ban bonfires or cars.
So why is Supergirls one thing different?
Supergirl describes the intense pain of Kryptonite poisoning, which Lena argues makes it the best weapon against Reign.
In the end, they form an uneasy alliance to stop their common enemy.
And they strike it just in time, too.
Alex stands her ground when Reign kicks down the door, with an assist from a ceiling-mounted chain gun.
that knocks off Reigns mask.
Supergirl then reminds Reign that her code is to pursue justice and make the world better.
But since Ruby hasnt sinned, You cant kill her.
SAME, MARTIAN DAD.
Jonn tells him he helped them catch Reign, but Myrnn has no memory of any of this.
Now brace yourself for some awkwaaaaard.
Lena and Kara bump into each other in an elevator while visiting Ruby.
They make the requisite I havent seen you in ages!
noises, and then Lena confides that shes only working with that hypocrite Supergirl to save Sam.
I can never trust her again, Lena concludes.
Hmm, the next episodes named The Fanatical.
Any guesses how those two things might be related?