Drama ensues this episode, and more questions arise that may not get answered by the end of the season. It all begins in Kara’s apartment, where the recently unemployed Kryptonian and her Daxamite boyfriend are catching up on Game Of Thrones. Mon-El suggests a musical, but their happy moment of foreshadowing is interrupted when the t.v. changes. Across the city, DEO agents and civilians alike are told to release Mon-El of Daxam, or they would take him from his “captors” by force.
The super-gang comes together at the DEO, where they try to figure out a game plan. J’onn calls for Winn’s help, but the tech genius isn’t around. Instead, he and Lyra break into an art museum with the promise of “divine museum sex” to be had. As the sun rises, Kara decides to welcome the “Noobs” to Earth, and makes Mon-El stay behind when he attempts to accompany her. Upon approaching the ship hovering over National City, Supergirl gets attacked. Mon-El seems to panic over this altercation and relinquishes himself to the attackers. Kara returns to the agency to stop him, but he tells her it’s his decision. When the beings teleport him to their ship, Kara superspeeds into his arms and ends up going with him. Upon their arrival, the soldiers surrounding them kneel, and the beings reveal themselves to be the King and Queen of Daxam – and Mon-El’s parents, making him Prince of Daxam. Mon-El reluctantly reunites with his family and introduces Supergirl as Kara Zor-El, Hero of Earth.
At the DEO, Winn is singing a goofy rendition of “Celebrate Good Times,” and the surrounding agents are judging him for it. His ridiculous “Musical Number” is interrupted by a call from Maggie. He ends up down at the precinct in the interrogation room over his museum break-in. The Detective tells him that Vincent Van Gogh’s Starry Night was stolen the museum and Winn seems to be the only one on camera. When she questions him about it, he claims that the lines were shorter. At Night. For the Art-Looking. Because they were totally doing that. Looking at art, I mean. And he didn’t at all stress-eat an entire box of donuts over the questions.
Kara is uncomfortably attending dinner with royalty, where the King and Queen admit their surprise upon learning that Mon-El freed slaves on Slaver’s Moon. Kara comments that they saved them from being treated like animals, and that they weren’t goods to be traded. Despite the obvious tension between Kara and the Daxamite royalty, the Queen suggests that they should return to Daxam now that the planet’s air is breathable again; with their help, they could make Daxam great once more. Mon-El responds that Daxam was never great, but his comment backfires onto Kara when his mother suggests that she filed his head with Kryptonian lies.
When pressed, Mon-El reveals the truth about his escape from Daxam: When Krypton exploded Mon-El was in bed with a girl. A guard wakes him and explains that they need to evacuate, and he and Mon-El leave the girl behind. In the scattered ruins of the city, a Kryptonian Emissary is programming his ship in an attempt to return to his planet. The guard grabs him and says that Krypton has fallen and is taking Daxam with it. He punishes the Kryptonian by shooting him in the chest. Mon-El jumps into the ship while the guard wards off the scared Daxamites that surround it. Mon-El escapes, and when he finishes his story, Kara excuses herself under the pretense that she needed to attend to things on Earth.
Mon-El follows, and when they return to the DEO, Kara explains that the worst thing isn’t that lied; It’s that he reaped the benefits of the cruelty that his planet was famous for. She admits that she can’t even look at him and flies away, leaving the prince to wallow. Alex and James arrive at the NCPD, and Alex is upset that Maggie didn’t give her a heads up. The detective comments that that’s not how their jobs work but that she DOES think Lyra set Winn up. The elder Danvers sister convinces Maggie to release Winn for 24 hours so they can find proof that he’s innocent.
The trio return to the DEO, where it’s apparent that they can’t find any proof. Kara asks who her people were, and Winn tells her that Lyra’s Valerian. J’onn and Kara reveal that Valerians can’t be seen by any type of Camera, while Alex finds that other artwork had been stolen by someone matching Lyra’s M.O. The only information Winn can offer is that he met her at the alien bar. Kara, James, and Winn reunite as the Superfriends and agree to investigate. Alex tells the boys to go ahead, before talking to Kara bout Mon-El. She suggests that maybe Mon-El IS an evil prince, but perhaps he’s simply ashamed of his past and looking for a fresh start. Just as they finish, the Queen arrive at the DEO and demands to speak to Kara.
Alex, James, and Winn interrogate a patron about Lyra’s whereabouts, but in order to get information, the patron demands Hamilton tickets. Alex agrees, and he tells them about Lyra’s address – Winn asks how Alex plans to get the most sought after tickets in the country, and it’s revealed that the actor who plays King George is an alien and owes her a favor. Meanwhile, the Queen is convinced that Kara, in all her “Kryptonian integrity” hates Mon-El for being Mon-El for being prince, and tells her that she should use the power she has over him to persuade him to return Daxam. In another part of town, Alex, Winn, and James find Lyra in a trailer park, but Winn enters alone. He tells her to look him in the eye and say he was just a mark, which she does without blinking.
Dejected by the admission, Winn makes to leave, only to display that he had Guardian waiting on the sidelines to bring her in. Lyra produces her own backup, who try to make quick work of the lead-clad vigilante. Lyra bolts and while Winn pursues her, Alex jumps in to help James. He ends up saving her life when she’s almost run down by a van. The baddies jump in and drive away, not only leaving Lyra behind, but the Starry Night painting as well.
Sulking in the cells of the DEO, Lyra is forced to endure Winn’s wrath as he storms in and demands the truth. She claims that the gang of aliens have her brother, Bastion, and she vowed to clear his debt to them. Winn, determined to believe her and help, convinces her to tell him about the buyer. The alien purchasing the painting is named Mandrax, and happens to be a Fort Rozz Escapee. When asked about a plan, Winn states that they should trade the painting, get her brother, and get out, but J’onn can’t afford to believe that the brother even exists.
Kara meets with Mon-El, who tells her they should just make up, but The Girl Of Steel refuses to forgive him so easily and storms away; she’d tried to suggest that he go home to his planet, but he didn’t want to leave what they had behind. In the interim, Winn decides that in order to save the Valerian woman he loves, he has to go rogue. He releases Lyra from prison and takes her AND the painting to the drop off point. Lyra tells the gang leader that they had a deal, and her brother is produced for a brief moment before Mandrax arrives.
Winn and Lyra rush to leave with her brother, but they won’t allow the trio to depart until Mandrax inspects the goods. Unbeknownst to Lyra, Winn hadn’t brought the actual painting, and when Mandrax turns on him, Guardian arrives to fend off the alien. The gang turn their guns on Winn, Lyra, and Bastion, but Winn gets one of the guns and it turns into a standoff. Before Mandrax can end up killing James, Alex and a slew of DEO agents drop in to save the day. Lyra gets to reunite with her brother, and at the NCPD, Winn provides not only the Starry Night painting, but the suspects behind the art smuggling ring; the DEO agent ends up leaving in fear when he grabs Maggie’s shoulder and the detective threatens to throw him in lock-up for the fun of it. After he leaves, Maggie giggles to Alex about having scared him, and Alex proudly wraps her arm around her girlfriend, claims it was almost as good as when she does it, and the couple heads home.
At the DEO, Winn gives Kara a bit to think about when he reveals that he’s already forgiven Lyra for her actions, and that she had only done what she’d done out of love and devotion to her brother. When Kara arrives home, she finds Mon-El waiting for her. It’s obvious this is hard for both of them, but even as he confesses his love for her and pleads for her forgiveness, she tells him she can’t and that things are over between them. With that said, he leaves and ends up on his parents’ ship. The King and Queen try to convince Mon-El that there’s nothing tethering him to Earth, but he responds that regardless of whether he and Kara are together, he should stay. He demands that they return to Daxam and never come back to Earth, which they reluctantly agree to.
At the DEO, the gang is gathered and listening to J’onn, who announces that a new and very unlikely prisoner would be getting hauled in that day. While the superfriends are waiting, Winn tells Kara that he finished designing a device that SHOULD allow her to travel to The Flash’s dimension, and just as he hands it to her, they’re interrupted by the arrival of the new prisoner. The Music Meister (Guest Star Darren Criss – Glee) stirs up a heap of trouble in the DEO. Despite being handcuffed, he manages to ensnare Supergirl into a spell. As she steps closer, he breaks free, snags the dimensional device, and announces his plan to go play with The Fastest Man Alive. After he vanishes, Kara passes out.
In her Entranced state, we see the world she’s been brought into. Set in what looks to be the 1920s of America, A stagehand pulls on her arm and tells her that their main act cancelled and that she’s to go out and sing. Just as she steps onto the stage, the episode ends and the musical crossover is to be continued on The Flash! Tune in to The CW every Monday for the latest Supergirl episodes!