Hogwarts: The Savior's Strong Cousin

"Thank you, sir." Harry bowed deeply to the old wizard to express his gratitude.

The old wizard smiled and said, "You're welcome, Harry. Remember, true strength comes from inner determination and the pursuit of dreams."

Harry nodded, his heart full of strength and confidence. He knew that there were many unknown challenges waiting for him in the future, but he was no longer afraid because he had found his own strength.

When Harry Potter returned to Hogwarts from the valley, he was in a particularly relaxed mood. He successfully mastered the true meaning of flying magic and was full of confidence. However, after returning to school, he found that the situation was still tense, and the dispute between Dumbledore and the Ministry of Magic intensified. In order to protect Hogwarts, Harry decided to take a bold plan-switching identities with his friends in order to better cope with the upcoming challenges.

One night, Harry summoned Hermione, Ron and Luna to hold a secret meeting in the common room of Gryffindor Tower. They sat around the fireplace, the firelight reflected on their faces, the atmosphere was tense and serious.

"Harry, what are your plans?" Hermione asked anxiously, her eyes full of worry and curiosity.

Harry took a deep breath and said firmly, "I think we need to take some special measures to protect Hogwarts. I plan to switch identities with you so that we can distract our attention and better deal with various situations."

Ron frowned. "Swapping identities? How is that possible? We look completely different!"

Hermione nodded in agreement, "Yeah, Harry, the people in the Ministry of Magic are not so easy to fool."

Harry gave a mysterious smile, "I know this sounds crazy, but I have an idea." He took out a few bottles of Polyjuice Potion from his pocket and placed them on the table.

"This is a multi-purpose potion. As long as we add your respective hair, we can temporarily transform into each other's appearance." Harry explained, "This way, we can better confuse the enemy and protect Hogwarts."

Luna smiled and nodded, "It's an interesting plan, Harry. I'm willing to try it."

Hermione looked at the potion bottle, and although she was a little hesitant, she nodded, "Okay, Harry. I believe you."

Ron sighed, "Well, it looks like we don't have any better options. I'm willing to give it a try."

So, Harry distributed several bottles of potion to everyone, and everyone took out a strand of their hair and added it to the potion. The potion turned into different colors, and they drank it all, and instantly felt their bodies begin to change.

A few minutes later, Harry looked in the mirror and was surprised to find that he had turned into Ron, and Ron had turned into Harry. Hermione and Luna also completed the transformation, and their appearances were completely swapped.

"Wow, this is amazing!" Ron said in surprise, looking at himself in the mirror.

"We must use this opportunity carefully," Hermione said seriously, "so as not to reveal our true identities."

Harry nodded, "Right. We need to split up now and try to gather as much information as possible to understand the Ministry's plans."

Over the next few days, Harry and his friends act as each other's identities. Harry (as Ron) and Luna (as Hermione) investigate the Ministry's activities at Hogwarts, while Ron (as Harry) and Hermione (as Luna) monitor the school from within.

One night, Harry and Luna were looking up information in the school library, looking for clues to the Ministry of Magic's plan. The library was empty, and only the two of them were quietly flipping through books.

"Harry, I think we need to investigate further," Luna whispered, "Perhaps we could try to gain access to the Ministry's secret archives."

Harry nodded. "You're right. We need more evidence. Tomorrow night, we'll try it."

Meanwhile, Ron and Hermione were also on their mission. They discovered some suspicious behavior of professors, especially Professor Snape, who seemed to be secretly in contact with someone in the Ministry of Magic.

"Hermione, what do you think?" Ron whispered. "What do you think Snape is doing?"

Hermione frowned, "I'm not sure, but he must be planning something. We need to follow him and find more clues."

So, the next night, Harry and Luna sneaked into the archives of the Ministry of Magic, while Ron and Hermione continued to follow Snape. Both groups faced great risks, but they did not back down.

In the archives of the Ministry of Magic, Harry and Luna found some secret documents that detailed the Ministry's activities in Hogwarts. It turned out that the Ministry of Magic tried to gradually control the teaching of Hogwarts by strengthening the defense class, and even attempted to insert some Ministry of Magic officials into the school management.

"This is horrible," Luna whispered, "They want total control of Hogwarts."

Harry clenched his fists, "We can't let them succeed. We need to get this information to Dumbledore."

Meanwhile, Ron and Hermione successfully tracked down Snape and found him meeting secretly with a Ministry official, where they heard some key information and confirmed the Ministry's conspiracy.

"We must hurry back," whispered Hermione, "and tell Harry and Luna this information."

Finally, they successfully reunited and told Dumbledore all their findings. Dumbledore looked solemn, but he appreciated the courage and wisdom of Harry and his friends.

"You have done well," said Dumbledore. "We now have enough evidence to take action."

Harry and his friends felt an unprecedented sense of accomplishment. They knew that although the road ahead was still full of challenges, as long as they united as one, they could overcome all difficulties.

"We will protect Hogwarts," Harry said firmly, "no matter what the cost."

Harry Potter stood at the edge of the Forbidden Forest, holding his wand tightly in his hand. He had been practicing the power of his wand recently, trying to master more powerful magic to meet future challenges. As night fell, there was silence all around, with only the occasional calls of animals in the distance.

Harry recalled the secret documents he found in the archives of the Ministry of Magic that day, and his heart was still restless. He knew that the conspiracy of the Ministry of Magic would never end easily, and he and his friends must always remain vigilant and strengthen their own strength.

"Come on, Harry, concentrate." He whispered to himself, raised his wand, and silently chanted a spell. In an instant, a blue light shot out from the tip of the wand and hit a big tree in front of him, and a deep crack appeared on the trunk.