---
## Chapter Nineteen: Towards the Lost Laboratory
---
After weeks of meticulous preparations, the Night Guard team, led by **Echo** and **Lux**, set off towards the probable location of the Immortals' Lab. The information provided by **Dr. Kane** was vague, but it pointed to a remote area in the **"Ancient Echo Mountains,"** a rugged mountain range known for its mysterious phenomena.
The journey was long and fraught with dangers. They encountered dangerous wild creatures, strange energy storms, and even some **Shadow Organization** agents who were searching for the same thing.
Thanks to Dr. Kane's guidance, using advanced, modified sensors, they managed to track faint energy signals emanating from deep underground.
"The signal is getting stronger," Dr. Kane said, pointing to his glowing screen. "We're getting close."
They reached a secret entrance, buried under thousands of tons of rock and protected by ancient, yet incredibly powerful, defensive technologies. There were complex puzzles and riddles that needed to be solved to open the gate.
"These are the methods of the Immortals," Dr. Kane said in awe. "They protect their secrets not only with force, but with intellect as well."
With the help of Echo, who possessed extensive knowledge of ancient languages and symbols, and Dr. Kane, who was an expert in ancient technologies, they managed to solve the intricate puzzles.
With a deep, metallic sound, the massive stone gate slowly opened, revealing a dark tunnel that stretched into the depths of the mountain.
"Welcome to the Immortals' Lab," Dr. Kane said, his eyes gleaming with anticipation.
The tunnel was filled with strange engravings and glowing symbols. The deeper they ventured inside, the more the sense of immense power emanating from this place intensified. The atmosphere was charged with mysterious energy, as if time had stopped here.
Finally, they reached the heart of the laboratory. It was a massive chamber, filled with strange devices glowing with blue and green light. There were giant display screens showing complex symbols and equations, and glass tubes containing glowing liquids.
In the center of the chamber was a colossal, circular device, pulsating with immense energy. It resembled the **Energy Key** that Lux had stolen, but it was larger and far more complex.
"This is... the heart of the laboratory," Dr. Kane said, his voice trembling. "Here, we can find the answers. Here, we can find a way to save Laila."
But at that moment, Lux sensed a familiar presence.
"We're not alone," Lux whispered, his eyes narrowing. "They're here."
Figures emerged from the shadows. It was **Selina, Veron, Krome**, and a group of Shadow Soldiers. They had tracked them to the lab.
"I finally found you, you fools!" Selina sneered with a sinister smile. "I thought you were smarter than that."
"The Dark Lord was not far from this place," Veron said, unsheathing his claws.
Lux realized the real battle had begun. They had reached the heart of ancient secrets, but they were not alone. They had to fight to gain access to the Immortals' knowledge, and for Laila's fate, and the future of this entire world.