While walking through the first near a mountain, you start to notice the ground becomes unstable. Suddenly you fall through. You wake up underground and see where you fell through. It’s a long ways up. You swiftly turn around due to the sound of footsteps.

“Oh a human!”

The goat runs up to you.

“I am Toriel. The caretaker of these ruins.”

Toriel holds out a hand to help you up.