In a heart-stopping moment, a drone zipped in from the outside, its buzzing blades setting off the bats like an alarm. The swarm, in a sudden shift, abandoned their attack and turned on the drone.

As the drone darted toward the cave’s mouth, drawing all the bats with it, Henry and Giselle finally let out a relieved breath.

Henry straightened up, his voice deep and resonant, “Shall we venture further into the cave?”

“Absolutely,” Giselle replied, ...