Previously – Things have somewhat settled down for Clark, Lois and Jimmy after defeating Brainiac, although the transition to living on Earth is still a struggle for Kara Zor-El. While Lex Luthor continues to scheme and make plans against the Kryptonians, Superman and co. encountered a Kryptonian clone who escaped from a secret lab and whose whereabouts are currently unknown to them.
Superman and Supergirl successfully defend Metropolis. The duo easily save a child from being run over, stop a petty thief, and foil a bank robbery. Super Fever is so prevalent in Metropolis that they have put on Superfest, a fan convention that celebrates their heroes.
Kara is eager to present herself to the world as Power Woman, but Lois points out that she’s already been named Supergirl. While Kara is there in costume to show off her strength, her cousin is attending as Clark Kent because he still has a job to do. Jimmy is aware of how these things attract super villains, so he passes out signal watches to Clark, Kara, and Lois just to be sure. Lois sees it as a romantic gesture to Kara, but Jimmy insists he’s keeping things platonic with her.
Fellow Daily Planet reporter Cat Grant shows up and says she arranged for Lois to be assigned Superfest as a way to bring out Superman. Jimmy reveals that through Flamebird, he is publishing a comic book series, Superman’s Pal Jimmy Olsen, and will be there at the booth. Lois is less than impressed because the comics depict her as a sharp-toothed antagonist. While Clark goes off to introduce a panel, Lois notices Winslow Schott, aka Toyman, and decides to keep an eye on him.
Cat Grant observes Jimmy’s interaction with Supergirl and demands to know what their relationship is. Once again, Jimmy says they’re just friends. Supergirl, however, decides to take some initiative. Still unfamiliar with Earth dating customs, she asks him to be her mate and compares it to Clark and Lois. Jimmy openly expresses his fears that there’s someone out there better for her and tells Supergirl he doesn’t want a romantic relationship with her. Supergirl is heartbroken, but she has to leave for her panel in Hall S.
While the heroes are distracted at Superfest, a group of thugs attack a bank. With them is a woman armed with whips that come out of gauntlets on her wrists. Superman introduces Supergirl at the panel, but he hears the commotion at the bank and flies off to take care of it. It seems pretty routine for Superman, until the newly dubbed Whip reveals her whips are powered by a kryptonite backpack and can hurt him. It turns out the robots Lex Luthor created (which were then hijacked by Brainiac and destroyed) left kryptonite all over Metropolis, so it wasn’t difficult for The Whip to get her hands on some.
Cat Grant interviews Supergirl at the panel, and while she pretends to take questions from the audience, Cat keeps asking her own silly questions like what Supergirl’s sign is.
Lois continues to investigate Winslow Schott’s toy booth and confronts him, wondering what weapons he has hidden. Lois encountered Schott last season. He was an old friend of her father’s, but he betrayed them to Amanda Waller and Task Force X. Lois clearly doesn’t trust him, and when she reminds him of that, Schott says he’s just there to sell toys.
Cat’s questions for Supergirl become more personal, as Cat wonders if she is really 
needed in Metropolis if they already have Superman. Supergirl is unable to respond and looks to the audience for help. A girl explains that while she appreciates that Superman protects them, she likes that Supergirl fights for them. This prompts Supergirl to make a decision and asks for eligible men to see her at her booth after the panel.
At her booth, Supergirl has a line of men trying to date her, including a singer, a little boy with a Valentine heart, and a mime. Jimmy looks on from his booth with jealousy. Lex Luthor browses through Jimmy’s comics and then invites Jimmy to see his presentation. Cat wants to get into Jimmy’s head, and he confesses that all he will ever be is Superman’s pal.
Despite Schott’s toys being harmless, Lois continues to rip through them to find some kind of hidden weapon. She even takes a teddy bear from a little girl and tears into it in front of her. Lois realizes she’s behaving as badly as the Lois from Jimmy’s comic books.
Superman continues to fight The Whip, unable to gain any real advantage because of her kryptonite. The Whip explains that she wants to be the highest paid mercenary and has an amusing reaction to learning that Superman doesn’t get paid. Her kryptonite battery eventually runs out, and Superman ties her up in her own whips.
A bedraggled Clark meets Jimmy at his booth, but before he can catch is breath, he hears Lois arguing with the little girl’s mother. Clark smooths things over by buying the girl a new teddy bear and paying Winslow Schott for the damages. Lois gives Schott an apology but then employs some reverse psychology by saying she should’ve known he isn’t capable of inventing destructive weapons. This provokes Schott to press a button and turn his entire booth into a giant mech suit for him to operate.
Clark is ready to fly into action as Superman again, but a red and blue streak flies in and knocks Toyman’s mech outside. Turns out it’s a super powered Hank Henshaw dressed like Superman. As Henshaw handily and brutally pounds on Toyman’s mech, Lex Luthor explains that he has brought Henshaw back stronger than ever so that they can take back humanity’s future.
Later, Clark, Lois, Jimmy, and Kara reflect on the events of the day. Kara is uncomfortable with the fact that Lex is afraid of her. All Clark can say is that they will keep doing what’s right and things will work out.
Back at LexCorp, Lex continues giving Henshaw cybernetic modifications, including his iconic Cyborg Superman metal jaw. Lex is happy that they’re another step closer to winning over the people of Metropolis while Henshaw is happy he’s another step closer to saving the world from Superman.
This show is no stranger to conventions, usually showing scientific advancements, so it makes sense to set an episode at a fan convention. Cat Grant continues to be over the top, and while her questions to Supergirl are ridiculous, Cat isn’t wrong about Supergirl’s place in the world or wondering about Jimmy’s relationship with her. I would have liked to see more of the convention, maybe have Steve Lombard or Flip Johnson have speaking roles rather than wander around in the background. I feel like a lot of time went to Superman’s fight against The Whip, especially seeing as how it takes Henshaw 30 seconds to beat Toyman. While it’s interesting to see what kinds of life choices Kara is going to have to make, I’m eager to see more of B-1Z, Henshaw, and how this all fits into Lex Luthor’s plans.
Some things to note – Kara’s desire to be called “Power Woman” is a nod to the fact that a 
version of her is named Power Girl in the comics. Speaking of comics, Jimmy did indeed star in a series called Superman’s Pal, Jimmy Olsen from 1954 to 1974 while Lois was the focus of Superman’s Girlfriend, Lois Lane (1958 – 1974). In My Adventures with Superman, the Jimmy Olsen comics are about a muscular Jimmy helping Superman while the Lois comics take an “enemies to lovers” approach. The running gag of Jimmy’s net worth from the previous season briefly appears. When Jimmy talks about his comic, the tally shows up to reveal that he is worth $10,000,000. The Supergirl fan in the panel says her name is Jessica Cruz (better known as a Green Lantern who made her debut in the comics in 2014), and she is voiced by Auli’i Cravalho (better known as the voice of Moana).
The Whip appears to be a creation for this show, although she bears a resemblance to the Female Fury, Lashina. The name of the episode, “Mobile Suit Toyman”, is a reference to the 1979 anime Mobile Suit Gundam, and Toyman’s mech looks very similar to a Gundam. Hank Henshaw was a friend of Lois’ who was injured fighting Brainiac’s forces last season. Lex has been giving him robotic parts to replace his damaged organs. While it may look like the emblem on his chest is a version of Superman’s “S”, it’s actually a red L over a yellow triangle.
B1-Z was at Superfest, but none of the main characters noticed him. He takes pictures with what appear to be cosplayers of Teen Titans characters Beast Boy, Starfire, and Raven. DC shows tend to credit creators of specific characters, and this show has credited Marv Wolfman and George Perez for Slade Wilson. While this episode credits Dan Jurgens for creating Hank Henshaw and Marv Wolfman and Jerry Ordway for Cat Grant, it doesn’t credit Wolfman and Perez for Starfire and Raven or Arnold Drake for Beast Boy.
Throughout the episode, Clark expresses interest in buying a small toy farm set. The end credits show that he has purchased the set and put figurines of himself, Lois, Jimmy, and Kara inside it.
