Flowey gives Frisk a very special power that is the key to their survival in the underground.
Chapter title from the song by Toby Fox, that plays when you die.
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Frisk sat up with a harsh startled inhale. They looked around, trying to figure out where they were.
"Oh thank goodness it worked!" And small voice exclaimed next to them, causing Frisk to jump. "Sorry," Flowey the flower said meekly, not meaning to startle his friend.
"Its ok... you just startled me. I thought I died!" Frisk looked up and noticed something odd... how did they end up here? Wasn't this where they fell into the cavern?"
"Um... thats because you DID die Frisk. Remember? What Wimsun..." Flowey shuddered at the memory.
Frisk looked down at the flower. "Flowey. .. if I died, then how am I still alive?"
Flowey looked away with a slightly guilty look on his face.
"Flowey? What's going on here?"
Flowey sighed in reservation. "You're still alive because I gave you my power. As a human you already have determination, a strong will to survive. But I wasn't sure it would be enough to help you survive. "
"What do you mean?" Frisk asked, bringing their knees to their chest... a strange feeling overcoming them.
"I gave you my ability to LOAD and SAVE." Flowey smiled up at Frisk.
"What does that mean?" Frisk shook their head confusedly.
If Flowey had shoulders, he'd shrug them. "Basically it means if you die, or even do SOMETHING WRONG, you can reload to your last save point and try again. It's the only way you'll get out of the underground alive. Please believe me, I gave you this power cuz you need it more than me. Monsters are cruel, and horrible. And with out it, you'll just die, and die, and die!" Flowey was on the brink of tears at this point.
"Flowey, it's ok... I DO believe you." Frisk carefully cupped their hands around Floweys head. "How does it work?"
Flowey looked up at the human. Hysterics halted. "Oh, well, when I used it i could create save points whenever I wanted and go to whichever I wanted. But I think it's best for you to create the points only ever so often, and only go back to your most recent point. Trying anything different might put too much stress on your SOUL. "
"Ok...so how do I 'create' a save point?"
"Well... I'd rather not say what I used, but you yourself said you were determined to get out of here, and without hurting anyone. So, think of something nearby the fills you with 'determination' and then think 'save here'"
"Ok." Frisk closed their eyes and followed Floweys instructions. "How do I know it worked?"
Flowey chuckled. "It did. I can still tell when my power is used."
"Oh. Ok." Frisk bent to pick up Flowey and noticed he was rooted in the ground. "Flowey, didn't we put you in something so I could carry you around the ruins?"
Flowey looked away, dark look crossing his flowery face. "Frisk... why do you think I was so upset? This was the third time I tried explaining my power to you..."
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The other times were, frisk didnt believe Flowey and ignored his warnings, the other one Flowey DIDN'T tell Frisk about the ability till it was too late.