Adora piloted Darla, Mara's Ship, to Prime's space station with Glimmer, Bow and Entrapta hidden outside the ship in space suits. She surrendered herself for capture upon touchdown. While the clones took Adora to Prime the other three split up, communicating with radio-enabled earpieces. Glimmer went to free Catra, Bow and Entrapta to hack the computer system. In a random clone room Bow dispatched two clones, Entrapta found who she thought was Hordak and gave him the Data Crystal; he attacked her but Bow knocked him out and disconnected him from the computer system. The Wrong Hordak then lost his connection to the hive mind and he freaked out. Bow and Entrapta brought Wrong Hordak along because he could lead them to the server room and open the door.
Prime has given me peace. Something you could never do. You broke my heart. But he has made it whole again. Don't you see? This is for the best. I'm happy here.You could be happy, too
— Catra under mind control
In Prime's throne room, Adora tried to bargain with Prime using the threat of the Heart of Etheria. Prime called her bluff, saying that she would never do anything to harm Catra. He then revealed that he is centuries old, he crushed the First Ones and knows that Adora is a First One. Prime then revealed chipped Catra, who was under his control. Prime tried is Catra as a bargaining chip; when Adora refused Prime severed her communication with her friends; mocking Adora for challenging him and then left Adora and Catra to fight. Adora manged to damage the chip temporarily freeing Catra but Horde Prime manged to possess Catra and make fall off the platform they were on.
Disappointing. Some creatures are destined only for destruction.
— Horde Prime about Catra
In the trophy room, Glimmer attacked three clones while Bow, Wrong Hordak, and Entrapta entered the server room where they were overwhelmed by clones. It was taking too long to hack the server so Glimmer, who found her way to her friends, stabbed the computer with a lance, shutting it down.
Surrounded by clones a grief stricken Adora is able to summoned her true She-Ra form and defeated them quite easily. She carried an incapacitated Catra back to the ship, uttering Prime's words back to him, "You miscalculated."Entrapta summoned Darla when she and the others were surrounded by more clones. She-Ra showed up with Catra, and they boarded Darla and escaped. She-Ra used her powers to heal Catra's injuries. As Catra came back to Adora, she weakly smiled and greeted Adora with a "Hey Adora". The two hugged for a long time, both with tears in their eyes.
- "Save The Cat" was a temporary joke name for the script of this episode that became the final name since it never got changed. It is most likely a reference to Save The Cat by Blake Snyder, which is a screenwriting book. The "save the cat" trope in media is the idea that "if you show your hero stopping to save a cat stuck in a tree as [their] Establishing Character Moment, you're putting the audience on [their] side forever", according to TV Tropes.
- This episode is indeed a shout out to Star Trek: the Next Generation Season 5, Episode 23 "I, Borg". With Wrong Hordak being Hugh.
- Noelle Stevenson posted the original script for the episode to Twitter as an aid for aspiring animation writers, and challenged fans to spot the differences between it and the final product. In response to a comment about the final version of the episode cutting out a specific portion of Horde Prime's dialogue in the script, Noelle responded, "We felt that "you broke my heart" was more impactful coming from Catra, and elected to keep it simple!"
The original script of the episode was posted to scribd.com by Noelle Stevenson (with permission from Dreamworks) to help aspiring animation writers.