The Turtles walked through the underground subway, their footsteps echoing in the empty tunnels as they made their way to the entrance of the lair. They had defeated the Foot Clan in their last fight and, exhausted, they longed to return to the sewers to rest.

Just as they passed near the train tracks, Leonardo stopped dead, pointing at a strange object on the ground. "What is that?" He muttered, his brothers coming closer, curious.

Raphael picked up an ancient mirror. "Who leaves a mirror on the train tracks?" he asked disdainfully, before passing it to Donatello.

"Interesting," Donnie said, inspecting it closely. "It could be something ancient... I'll take it to the lab to study it."

Upon reaching the lair, the mirror was placed on Donatello's work table. However, no one knew that this mirror contained the lost soul of a woman who had died years ago in a tragic accident on that very subway. Hours later, Mikey was running away from Raphael due to some mischief, accidentally bumping into Donatello's table, causing the mirror to fall and shatter into a thousand pieces. From then on, everything changed. The turtles began to feel a strange presence in every corner of the lair. It was as if someone was constantly watching them. The feeling was so unsettling that even Raphael, normally the bravest, was starting to get nervous.

Raphael, arms crossed, snorted. “Again with your paranoia, Mikey?”

“No, really!” Mikey insisted, looking around with wide eyes. “It's like there's... something or someone... watching us from the shadows. And it's not Donnie spying on us with his cameras this time!”

Donatello, hearing his name, turned to him with a serious look. “Mikey, it was your fault that that mirror broke. It could have been a historical relic!”

Mikey shrugged. “Well, I don’t care if it was historic, bro… Something is stalking us, I know it!”

Leonardo, who had been silent until that moment, narrowed his eyes. “Whatever it is, we must stay alert. We can’t let our guard down.”