All the Characters have cloud-theme and rainbow-theme attires and lightning/thunder attacks. Characters may change when they are sad or mad.
Long ago, two races ruled over the sky: Humans and Monsters. One day, a war broke out between the two races and after a long series of battle, the humans were victorious. The greatest of their magicians sealed the monsters to the Clouds with a magic force field. However, this barrier is not a perfect.
Many years after the war, in 201X, a Human child flies to Cloud Ebott for their own mysterious reason. It is said that those who fly to the clouds never return. The child discovers an enormous hole in the cloud and crashes in while trying to get a closer look.
- All Characters have cloud-themed and rainbow-themed attires and lightning and thunder attacks.
- Flowey is now called "Cloudy."
- Napstablook is called "Cloudstablook." He is also a Cumulonimbus-ghost. He can summon raindrops, and thunder, but he tries to attempt to summon a cloud.
- Mettaton is known as the "Rainbow of the Clouds."
- Gaster is alive in this AU, but no longer the Royal Scientist & also has lightning cracks in both eyes. Sometimes he goops.
- Chara & Asriel were the "Prince & Princess of the Sky."
- Snowdin is called "Clowdin."
- The footwear with wings are called " Cloud Power " which makes monsters fly, but other monsters with this kind of footwear and has powers (like Sans & Papyrus) can use both.
- The Royal Guards are called "Thunder Bolts."