Hogwarts: The Savior's Strong Cousin

Harry and his friends decided to investigate. The first person they thought of was Dobby, who was once a house elf of the Malfoy family and is now a free elf. Dobby told Harry that he felt an ancient and powerful dark force was gradually awakening. In order to confirm this guess, Harry decided to visit one of the oldest places in the history of Hogwarts - the ancient altar deep in the forbidden forest.

They entered the Forbidden Forest on a dark and windy night. Deep in the forest, they found an ancient stone tablet covered with strange runes. Hermione studied the runes and found that it was a sealed altar that sealed an ancient dark power. The seal had begun to loosen, and once it was completely lifted, the entire magic world would fall into endless darkness.

At this moment, a cold wind blew, and a shadow emerged from the woods. Harry recognized that it was their long-time enemy, the resurrected Death Eater Bellatrix Lestrange. She was grinning, holding a black wand in her hand, and was obviously here to break the seal.

Harry and Bellatrix started a fierce battle. Spells intertwined in the air, and fire splashed everywhere. Just when Harry was about to defeat Bellatrix, she suddenly disappeared in a black mist, leaving behind a strange laugh. Obviously, she had successfully unlocked part of the seal, and the dark power was ready to move.

Back at Hogwarts, Harry and his friends held an emergency meeting. They decided that they must find the key to the seal and completely seal the dark power. However, the clues to solve this mystery were scattered in various ancient magic books and secret places. So they split up to look for clues.

Hermione and Ron go to the Hogwarts library to look up forgotten ancient scrolls and books. Harry decides to visit Dumbledore's old friend, the legendary wizard Nicolas Flamel, hoping he can provide some valuable information. At the same time, other members of the Order of the Phoenix also begin to search for clues throughout the wizarding world.

Time is running out, the influence of the dark power gradually spreads, and the entire Hogwarts School begins to be shrouded in an invisible fear. Students begin to disappear, strange words suddenly appear on the blackboard in the classroom, and even the ghosts of Hogwarts feel uneasy. What is more worrying is that Hogwarts's protective magic begins to fail, a black liquid begins to seep out of the castle walls, and a foul smell fills the air.

Harry and his friends finally found the key clue on an ancient parchment. This text recorded an ancient ritual that could reseal the dark power, but it required an extremely precious magic item - the time hourglass. This hourglass is said to be able to control the flow of time, but it had been lost centuries ago.

They decided to split up and look for the hourglass. Hermione and Ron went to the European continent to pursue the legends of those ancient magic families, while Harry went to the Ministry of Magic, hoping to find some clues in the archives.

In the archives of the Ministry of Magic, Harry met his old colleague Sirius Black. They looked through a lot of documents together and finally found the trace of the hourglass in a long-forgotten file. The hourglass was once collected by a headmaster of Hogwarts, but after his death, the hourglass mysteriously disappeared.

As clues continue to accumulate, Harry discovers that the hourglass may be hidden in the secret chamber under Hogwarts. However, this secret chamber has never been discovered and can only be entered by solving a series of complex puzzles.

Time is running out, and the influence of the dark forces is growing. Harry and his friends must find the hourglass and reseal it before the dark forces fully awaken. They are facing unprecedented challenges, but in order to protect Hogwarts and the entire wizarding world, they are determined to complete this task no matter what the cost.

"Harry, we must find the lost ancient book," Professor McGonagall whispered, "Only it can reveal the true secret of the hourglass."

Harry nodded, his heart filled with tension and anxiety. He knew that time was running out and the threat of the dark forces was approaching. They entered the deepest part of the library, which was filled with long-forgotten books and scrolls, each of which carried countless secrets and history.

"Do you really think we can find that book?" Harry couldn't help but ask, with a hint of doubt in his voice.

"We have no choice," Professor McGonagall replied firmly. "Every clue leads to this place. Believe in yourself, Harry."

They began to carefully search the bookshelves of the library, their fingers gently running over the ancient books. Time passed silently, and Harry's heartbeat seemed to be getting faster and faster. Every time he opened a book, he hoped to find the answers they needed, but he was disappointed again and again.

"There are too many books here," Harry muttered, a hint of fatigue in his eyes, "We need to speed up."

At this moment, Professor McGonagall suddenly stopped and stared at a particularly old book. The cover of the book was covered with thick dust, but some strange runes could be vaguely seen. She carefully took the book down, gently blew away the dust, and revealed the title of the book: "The Secret of Time".

"Harry, I think we've found it," Professor McGonagall whispered, a hint of excitement in her voice.

Harry came over quickly, hope flashing in his eyes. They turned the pages of the book and found that it detailed the origin and use of the hourglass. Harry gradually relaxed, but a new worry arose.

"We must find the hourglass as soon as possible, and then perform the ritual described in the book," Harry said firmly, "This may be our only chance."

Professor McGonagall nodded. "However, this ritual requires powerful magic and precise time control. If it fails, we will face even more serious consequences."

"We did it, Professor," Harry panted. "The wards around Hogwarts have been re-strengthened."

Professor McGonagall nodded, a hint of satisfaction in her eyes, "You did very well, Harry. Now, you need to rest well, and we will continue to study the book and find more ways to fight against the Dark Arts."

Harry felt a sense of relief. Although he was physically exhausted, his heart was filled with a sense of accomplishment. He knew that this was just the beginning and there would be more challenges waiting for him and his friends in the future.

In the next few days, Harry and his friends continued to study "Dark Origin", looking for more effective ways to fight against dark magic. Every page was full of unknown dangers, but they did not back down and persisted.