Chapter 25: The Old Submarine

The aftermath of the battle left us breathless and weary, but the sense of urgency didn't abate. The Heart of Shadows was safe for now, but Harlan's threat lingered. We had to keep moving, to protect the artifact and find a way to stop him for good.

The subterranean leader, seeing our determination, gave us a solemn nod. "Follow me," he said. "There's something you need to see."

We followed him through the labyrinthine tunnels of the hidden city, our footsteps echoing in the silence. The whispers of the island seemed to guide us, their ethereal voices both a comfort and a reminder of the power we were dealing with.

After what felt like an eternity, we emerged into a vast underground chamber. The air was damp and cool, and in the center of the room sat an enormous, rusting hulk of metal. It was a submarine, abandoned by a previous expedition.

"This was left behind many years ago," the leader explained. "It belonged to explorers who came seeking the secrets of the island. They never ret