All the ponies are having a tea party at Twilight’s house, but then they receive news that there is a big problem with Spike and Princess Celestia wants to throw him into a dungeon. They all go to see the princess, and when they arrive, she shows the girls the letter she received from Spike expressing his desires, and she wants to stop him before he hurts anyone.
Now that he is 18 and in heat, he doesn’t know if he can control himself. He and his sister would go wild, subjugating everyone they see to satisfy their carnal desires, and they might even join forces in search of others and have a huge orgy, needing new sexual partners every day.
They even tried to subdue her, but the princess resisted and left the island, saying she should have warned them earlier. Twilight tells the girls everything, and they are willing to go help their friend. Just imagining it, some of them are already excited about what awaits them. But it’s all in the name of helping their friend.