The gate and the walls were entirely constructed of metal, yet they didn't reflect light too harshly. Instead, they emitted a faint, subdued metallic sheen. Surveillance cameras and speakers were installed along the walls as well, making communication with those inside convenient.

But now, none of the devices were functioning. With limited energy, conservation was a necessity.

Ray knocked on the door.

Bang. Bang. Bang.

Inside the shelter, Lucy and Lindsay both shuddered at the same time.

"T