After a defeating Asriel, Frisk decided to Reset, wanting to feel the same feelings they felt while giving hope to all monsters.
When they Reset, they woke up in the bed of yellow flowers, in the beginning of the fall of the mountain. But everything seemed different.
There was error particles and glitch effects all around.
Frisk moved to the next room, wondering what was going on, but in the next room, everything was worse.
Red strings everywhere, and Flowey hanging, pierced by multiple blue strings.
Flowey was melting, completely white. Flowey became an amalgamate of himself.
Frisk looked with shock, but continued. Frisk proceeded forward.
Frisk tried to Act, but there was no options to choose. So Frisk remained thinking what they should do, but a short moment later, a white amalgamation of Toriel slowly appears.
The Toriel amalgamation talked, "M... -my... c-child...", with a distorted voice, unable to be heard properly, and giving chills going down the spine.
Frisk moved back, retreating to have distance, but soon, they entered a battle with the amalgamation of Toriel.
Frisk tried to act, but no results.
The amalgamation of Toriel fought. Drops of white liquid falling from top of Frisk, like acid rain. And throwing white flames that melt and explode in mid distance.
After a moment, Frisk fled, running towards the entrance of the Ruins.