Peter silently recovered his health while traveling on the sword. He also received the news from Camellia. It seems both of them were taken to the Council as well. He didn't expect the vampires to make such a sudden move.
Of course, he knew they would make a move but this was still fast. He had almost no preparation whatsoever for this. And, more importantly, Anne's condition was worse. That's why he got this angry. If it wasn't for the Camellia, Anne would've died.
After all, Morgan was a Half-Supreme rank vampire. It would take more than a miracle to kill him. If it wasn't for his agility, he might not even be successful. He took a deep breath and clenched his fist. After facing Supreme, he finally understood the difference between him and supreme.