One of the things that I do love about Supergirl like Smallville before it was the way it honours the Superman/Supergirl mythos and even the DC universe itself. In season 1 of Supergirl we got Helen Slater and Laura Vandervoort, past Supergirls, in recurring roles and Lois and Clark’s Superman Dean Cain. So in season 2, we have Lynda Carter, Wonder Woman herself, guest starring as US president Olivia Marsdin.

President Marsdin is in National City to sign the Alien Amnesty. The Alien Amnesty is all about granting all the rights and freedoms to aliens living in the United States. President Marsdin is hoping that this allows aliens to feel free to come out in the open.

However, when President Marsdin lands in Air Force One, she is attacked by an unknown force. Supergirl saves her life and brings her back to the DEO. Supergirl is star struck while J’onn (I am calling him J’onn now and no longer Hank) wants to believe in the purpose of the Alien Amnesty, he can’t get behind it. President Marsdin wants J’onn to have some faith and hope in the Alien Amnesty.

At the scene of the crime, Alex is collecting evidence to see who could be behind the attack when she sees NCPD detective there. The detective introduces herself as Detective Maggie Sawyer (Floriana Lima), who is part of the science division. Sparks are flying between the two as they butt heads on how to conduct the investigation.

You know who else is butting heads? James Olson and Snapper Carr. James has called his first editorial meeting as the new interim CEO of CatCo when Snapper hijacks the meeting and starts to assign stories. Kara wants to be able to interview the president but instead he assigns her to interview Lena Luthor to get her take on the alien amnesty since her brother Lex is a well known alien hater.

When Kara goes to interview Lena, she gives Kara a alien detector device that she believes will make L Corp loads of money. Even though it is in prototype phase, Lena tests it on herself and she passes and wants Kara to use it. Kara believes the device is like a witch hunt and manages to break device as Kara passes the test. Kara writes her story but it is more of an op-ed and Snapper tells her to re-write it with just the facts.

Back at the DEO, suspect number 1 on the attack on the president is Mon-El who at the top of the episode has escaped the DEO and conveniently soon after the president was attacked.

Winn manages to find Mon-El but by the time Alex gets there, he is gone but Maggie is there. Instead of working against each other, Maggie reaches out to Alex in help of her search of Mon-El.

Maggie takes them to a dive bar that is a safe haven for aliens. A bonus of the bar is that it only plays Dolly Parton songs. Alex learns more about Maggie and how she relates to aliens because she too is an outsider as a visible minority and a lesbian. After questioning some aliens to a possible clue, Alex heads back to the DEO where Winn manages to find Mon-El who is at an observatory sending out a distress signal not to Krypton but to Daxam.

This piece of information means something to Kara and she goes to confront Mon-El and she manages to bring him back in to the DEO. We learn that Krytonians and Daxamites are like the Hatfield and McCoys, the worlds at odds with each other.

In captivity, Mon-El denies being behind the attack on President Marsdin and to me there is some major sparks between them too.

Kara, Alex and the DEO are out protecting President Marsdin during the event where she will sign the Alien Amnesty. Kara thinks all will be well since Mon-El is in captivity. However, there is an attack again and this time it is Scorcher, a woman that Alex bumped into at the alien bar. Scorcher’s powers is she can toss fireballs. One of them hits Kara and she has to spin ala Wonder Woman to douse the flames. Kara saves President Marsdin again and goes after Scorcer and so does Alex and Maggie. Unfortunately, Scorcher takes Maggie.

Alex goes back to the bar and finds out from the bartender (Sharon Leal) that she can find Scorcher at the foundry.

Supergirl confronts Scorcher who sees the Alien Amnesty as a bad thing. While the two fight, Alex sets Maggie free. Eventually, Supergirl defeats Scorcher.

Maggie is brought back to the DEO to be patched up and says she and Alex make a great team and should perhaps partner up again. Maggie leaves for a date and it looks like Alex might be a bit jealous.

Meanwhile, Kara visits Lena to talk about her article and how writing it helped her understand about not seeing aliens as threats. Kara then goes to see Mon-El to apologize for misjudging him and they introduce themselves to each other. Kara then tells Mon-El the bad news of what happened to Daxam.

President Marsdin prepares to leave but before she does, she thanks J’onn and Supergirl for all of their help. As President Marsdin leaves, we see that she is an alien.

At episode’s end, J’onn goes to the alien bar and meets the bartender from before who is shocked to see him in his Martian form. J’onn senses something is up with this woman and follows her out and demands to know who she is. The bartender changes form and reveals herself to be M’gann Morse aka Miss Martian or as she calls herself the Last Daughter of Mars.