January 1, 2041, 10:20 PM, 4 hours before the nuclear missile is expected to unlock.
"BG, I'm in position." Ban Xia gasped, kneeling on the ground, wiping the sweat off her forehead, holding the walkie-talkie on her backpack strap, "I have a bad feeling, that thing might be nearby, I need to speed up."
"Received, be cautious, make it quick." Bai Yang's voice came from the walkie-talkie, "Have you found it? Miss, OVER."
Ban Xia successfully located Miss Qiu, who was still in the same place as when she last came to find her. Covered in dust and debris, lying amidst rubble, the object had been lying here untouched for many years, resembling a rock.
The girl took out the key from her pocket, bit off the plastic seal with her teeth, and touched the control window on the nuclear missile.
"I'm about to insert the key."