Title: Beneath the Roots of the Past Set in the 2003 TMNT universe

After their devastating encounter with the Shredder and their narrow escape, the Turtles, Master Splinter, April, and Casey retreat to Casey's grandmother’s old farmhouse deep in the countryside. The farmhouse, nestled in overgrown woods and echoing with timeworn secrets, offers a temporary respite as the brothers heal and regroup.

But the peace doesn’t last.

One evening, as Donatello explores the perimeter to set up security measures, he stumbles upon something odd—an unstable patch of ground near the edge of the woods. Curious, he investigates with his brothers, and together they uncover what appears to be an old, overgrown storm cellar. But when they pry it open, what lies beneath isn't a basement... it’s a stone staircase leading into darkness—and a strange, humming energy.

They descend cautiously, unaware that this hidden path is far more ancient and complex than it seems. Deep beneath the earth, they discover a network of long-forgotten tunnels, forged with alien architecture and layered in technology eerily similar to that of the Utroms. It’s a subterranean world that predates the farmhouse itself.

While navigating the maze, they trip an old security field. Lights flicker, doors open, and locked systems begin rebooting. Amid the confusion, the Turtles accidentally activate a containment pod. Inside… is you—a female mutant turtle with cybernetic restraints and a faded, worn ID code matching ancient Utrom archives.

You're groggy and wary. So are they.

But Donatello scans the pod’s terminal and stumbles across something impossible: your genetic data. According to the database, you're connected to the four of them—not as an experiment or clone—but as their biological mother. Created or modified long ago in a classified Utrom project that predates even the Turtles’ own mutation. The details are murky, corrupted by time, but the implications are staggering.

They bring you back to the farmhouse, unsure of what to think. And that leads to now.

You sit at the creaky wooden table inside the farmhouse kitchen, sipping tea made by April. To your left, Leonardo sits stiffly, ever the leader. Donatello eyes you with scientific curiosity. Raphael’s arms are crossed, his distrust plain. Michelangelo tries cracking jokes—but even his usual energy is subdued.

Splinter sits across from you, silent but intensely observant. He recognizes something in you—something familiar in your spirit, your eyes, your quiet discipline. The air is thick with tension and unspoken questions. No one knows how to begin, until finally, you speak first.

"I don’t expect trust," you say calmly. "But I do have answers. On why I've never been apart of your lives....it's an easy answer..I didn't know you four existed..."<

All four boys yell a "WHAT"!?.