Irys, Gigan, and Megalon step through a portal and emerge in a city as humans. After Gigan and Megalon take a minute to get used to their new bodies, Gigan discovers his hands are mechanical and can extend blades, and his eyes (concealed by sunglasses) are mechanical. Irys wonders if they are back in that realm that held Sunset Shimmer, but Gigan is horrified when he realizes the city looks exactly like Maretropolis, except it is populated by humans instead of ponies. Gigan detects two sources of energy, one in a building and one in a park. Irys and Megalon will find the one in the building while Gigan will search the park. Gigan warns Irys that Megalon gets easily distracted and must be watched at all times. Gigan attempts to fly off, but when he leaps into the air, he ends up kissing the sidewalk. "I... HATE... this body..."
Godzilla Junior wakes up fully healed to find Mothra Lea playfully chewing on his tail. After a bit of banter between the two close friends, she shares that she just learned Changelings can shape-shift, except they can't alter their size or gender. She transforms into a taller Twilight Sparkle, Princess Celestia, Princess Luna, and finally a female version of himself, which freaks him out. She then makes a unique disguise, herself as an Alicorn. She learned of the previous invasion of Canterlot by Queen Chrysalis and her Changeling army and how many of the citizens are still fearful of Changelings. She figures this new form will allow her to move freely amongst them. She then warns him to stay inside the castle for the time being, as the citizens all know what he looks like, and while half are grateful for his defense of Canterlot, the rest are out for his blood. Before she leaves, he asks how he can repay Luna for all she has done for him while he was recovering. She shrugs and suggests he observe the ponies in the castle to see how they express thanks.
Gigan follows the energy signature to a large statue of a woman riding a horse. As he wonders how he's supposed to bring this back, a portal opens up and a woman leaps out and tackles him. Although they are both humans, they instantly recognize each other, and Mane-iac is very happy to see him again. Gigan screams.
Godzilla strolls the palace garden, feeling content. He had been fighting for over 17 years, and back on Terra, periods of peace were hard to come by. When he was born, he knew what it was like to be small and vulnerable like a human. To live in fear of being killed by monsters that dwarfed you. When he grew up, he didn't forget that, so he dedicated his life to protecting others. Human, Kaiju, or Pony makes no difference. He will fight to his last breath to keep them safe from evil. He looks around and sees a stallion present a rose to a mare, who thanks him and gives him a hug. Godzilla is confused and wonders why ponies would give each other flowers. He vaguely remembers his mother Asuza Gojo being given flowers by a man, and wrongly concludes that humans and ponies give each other flowers as snacks. Confident that he now knows how to thank Princess Luna, he uproots a random rose bush and walks back inside.
After incidents where Megalon gets distracted by random things like change on the sidewalk and a stray cat, Irys and Megalon break into a warehouse and find a copy of the Electro-Orb Gigan retrieved earlier. After commenting on how easy that was, Megalon detects Gigan's location and they decide to meet him. Along the way, they hear a high-pitched scream. Megalon identifies it as Gigan, confusing Irys since Gigan's regular voice is deep, then they start running towards it.
Megalon arrives at the park first to find Gigan wrestling with Mane-iac, who keeps trying to kiss him. Gigan draws his blade, but to his surprise, no matter how hard he slashes or thrusts, his blade that can slice through skyscrapers and Godzilla's hide only cuts through her clothing while leaving her skin unmarked. He tries one last slash that only succeeds in breaking his blade. Mane-iac calls him silly and says he can't kill anyone because of the rating. She points at the sky and they see a giant, two dimensional black and white box with a large 'A' written in it. Gigan asks what the hell that is, and Megalon explains it means Rated A for all ages; no blood, gore, extreme violence, or sexual themes allowed. Gigan starts freaking out about how this world is a comic book, then Mane-iac grins and says they can still do the last part as long as they do it outside of the reader's view. Gigan roars that he's had it with this crap, but she straddles him and kisses him right on the lips.
Gigan starts freaking out even more but can't break her grip. Megalon grins and congratulates him. Mane-iac breaks the kiss and asks Megalon who he is. When he introduces himself, she smiles, calling him adorable and says she will soon be his new sister-in-law. Megalon gets excited and asks if he can be the best man, no wait, Monster X would probably be the best man... he asks if he can be the flower girl. Unable to take it anymore, Gigan goes catatonic. Mane-iac frantically tries to wake him, but he doesn't respond. Megalon removes his sunglasses to show his eyes are displaying the blue screen of death.
Suddenly, Irys arrives and throws the Electro-Orb like a baseball into the back of Mane-iac's head, then orders her to get away from her flockmates. However, Mane-iac misinterprets a certain word she said. "M-M-MATE?!.. Y-Your his mate?!" Irys is disgusted and says not like that, but Mane-iac doesn't listen. Angrily calling Gigan a cad who played with her heart, she opens a portal and leaves, threatening to make him sorry if they ever meet again. After recovering from that weird experience, Irys and Megalon carry the Electro-Orb and the still frozen Gigan through the portal to Zenith, with Megalon commenting it will probably take a few hours for him to wake up.
Princess Luna wakes up from her nap in her temporary quarters to find Godzilla knocking at the door. He thanks her for everything and presents the rose bush. She starts blushing and stammering, but he just walks away oblivious, telling her to enjoy the snack. Princess Celestia walks up and starts teasing her. After Luna remembers she has to raise the moon, Celestia decides to ask Captain Blueberry Frost to have Godzilla transferred to the Night Guard.
In the human world Sunset Shimmer calls home, Rainbow Dash reads through her comic book. It showed Irys, Gigan, and Megalon's adventure, and she thinks it doesn't make any sense and the writers must have lost their minds. When she shows Sunset Shimmer the comic, she spits out her soda when she sees Irys.
Appleloosa holds a big party after the citizens, Buffalo tribe, Applejack, Rodan, and the relief team helped repair the town. Rodan is relieved after he read about Godzilla's victory against the Gyaos flock. He couldn't stomach their apple pies, so he caught a few fish from the river, and now he is content. Applejack walks up and says some of the Pony and Buffalo children would like to meet a real Griffon up close. He doesn't mind, and the curious children soon dogpile him. She looks on fondly, remembering that earlier Rodan stated he wanted to help because by being kind to him, the ponies were part of his flock now. She returns the thought as Rodan plays with the youngsters, declaring he's now one of their herd.
