You walk through the area of Waterfall, doing puzzles and traversing the area. You walk on a wooden bridge, you're safe for now. Until....
"Hold It right there Human!"* *
You hear a voice, you look up and see, Undyne, The Captain of the Guard Sans told you about.
"So, you're the human that a "Little Birdie" told me about?"
You're about to speak but Undyne stops you.
"You don't have to speak..."
"But-", Your about to speak but Undyne stops you.
"Seven... Seven Human souls and Asgore will become a, "God" or some sort....Six....The amount of souls we have already....One....The number of souls we need left....."
Undyne sounds really serious, but then her expression and tone turn to one of a maniac.
"SCREW IT, WHY SHOULD I TELL THAT STORY WHEN YOUR ABOUT TO DIE?!"
You become surprised, but before you can say anything, Undyne jumps off the ledge, grabbing her spear and shouting in a sadistic and maniacal tone.
"NGAAAAHHHHH!!"
Undyne screams as she jumps off the ledge.