We start off where we left off and that is Reign versus Supergirl and Mon-El. While the three battle it out, Lena takes the black rock and breaks off a piece to create the serum needed to separate Sam and Reign. Eventually, Mon-el and Supergirl pin Reign down and we see Reign and Sam separate with Reign floating in the air and exploding like Voldermort did in Harry Potter and the Deathly Hallows, Part 2. 

At the DEO, Sam is being checked out and is reunited with Ruby. Then Sam and Ruby are MIA for most of this episode and you just know that Reign isn’t truly gone.

Supergirl asks Lena to see if she can replicate the black rock so she can give it back to her people as they rely on it to breathe.

With Reign now “gone”, Kara tells Alex about Argo and her mom being alive. Kara wants to return home and relates how it felt to talk to her mom and hug her mom. Even though Earth hasn’t really felt like home, it was Alex that helped make it bearable. Alex tells Kara that she needs to take time for herself and encourages her to go home to be with her mom.

The DEO throws a going away party for Supergirl and CatCo does the same for Kara who is going away on “assignment”. And seriously if Lena can’t figure out that Supergirl and Kara are not one and the same with both of them being away at the same time then I question the Luthor intelligence.

Before leaving, Mon-el asks Kara that when she goes back to Argo City to look for a particular device that will alert the Legion that he is ready to go back. Kara then asks Mon-el to come back with her and he agrees. This is the first scene of the evening that clearly indicates that Kara and Mon-el still have feelings for each other and really displays the great chemistry between Melissa Benoist and Chris Wood.

Kara returns home to the welcoming arms of her mom and Selina is also there to welcome her back. Kara now in regular Kryptonian clothes is looking over old childhood mementos and sharing memories with Mon-el and Alura. Thara, an old childhood friend arrives wanting to catch-up with Kara over dinner with her husband and invites Mon-el to tag along.

On a walk through the market of Argo, Mon-el and Kara run into Val, the young boy that Mon-el helped cure of his lung disease. Unfortunately, a piece of construction almost falls on them but Mon-el gets them out of harms way. Kara notices a hooded figure leave the scene and alerts Thara who is a Argo peacekeeper. Thara believes it was just a construction accident.

However, Kara thinks otherwise. Mon-el believes her and tells her to trust her instincts. Mon-el gives Kara his Legion ring so that she can fly.

At dinner with Thara and her husband, Kara notices the hooded figure again and goes to confront her. The hooded lady protests her innocence and Thara believes her.

Back at home, Kara wonders if she is being paranoid. Alura thinks that Kara had to be in warrior mode for so long taking care of others that she needs to take some time to take for herself, something Alex had told her earlier.

At the indoor conservatory of Argo aka Vancouver’s Bloedel Conservatory, Kara is walking among the flowers and plants wearing the exact outfit she wore in the dream she had in episode 1. Mon-el is there too, wearing the outfit he was wearing. Kara thanks Mon-el for being there for her and what his friendship has meant to her. At this Mon-el cannot keep silent anymore and reveals that he still has feelings for her and that he doesn’t know if friendship is enough. Kara tells Mon-el about her dream and it really does look like the two will kiss but are interrupted by an attacking robot. Kara flies them away and sees the hooded figure.

Thara is pissed that she defended the hooded lady who reveals herself in league with Selina and the Worldkillers. Thara gets an alert from Alura who tells her daughter that Selina has made off with J’onn’s ship and back to Earth. Colville has a Kryptonian crystal that acts like a beacon for Selina to land. Selina grabs the crystal and creates another Fortress. Meanwhile, Sam’s quiet night with Ruby doesn’t turn out that way as we see something is wrong with her.

Elsewhere….

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  Supergirl — “Not Kansas” — Image Number: SPG321a_0356.jpg — Pictured (L-R): Mehcad Brooks as James Olsen/Guardian, David Harewood as Hank/J’onn and Jeremy Jordan as Winn Schott — Photo: Dean Buscher/The CW — © 2018 The CW Network, LLC. All rights reserved.

  This episode also dealt the issue of gun control. A DEO-developed weapon was re-purposed as a “hunting” rifle and sold to civilians. This pisses off J’onn that a lethal weapon is being sold to the public. The DEO and Guardian manage to trace the sale of the weapon to a disgruntled employee of a law firm who was pissed at being fired. This leads J’onn to ban the use of lethal weapons at the DEO but instead will use non-lethal weapons developed by Winn. This new policy does not go down well with some agents at the DEO.

• Alex is looking into adoption
• Lena hires Eve Tessmacher after discovering she is a scientist to help with replicating the black rock. Lena discovers something revolutionary about the black rock
• M’yrnn tells J’onn that his recent lucid state means he is nearing the end and he wants to perform The Reach, a Martian ceremony where he will pass on his memories and experiences down to J’onn so it isn’t lost. At first J’onn doesn’t want to do it but eventually comes around.

I am really loving having Erica Durance on this show and in such a positive nurturing role as Kara’s mom. It is so awesome seeing Durance sport the House of El crest on her that I look forward to seeing her in a suit next week as seen in some preview images.