The Summer Sun Celebration has a history of going wrong. Weather terrorism, revengeful, powerful, evil sister, you named it, it probably happened. And the second time in Ponyville is no different.

All the adults suddenly disappear, leaving the town is chaos. Not even Celestia is there to bring back harmony. And Discord ain't there either.

Some kids have powers, not like unicorn magic or pegasuii magic, but like none seem before. Like a earth pony levitating objects and a unicorn shooting lasers out of her hoofs.

And there's a evil entity in the Everfree who wants control.

This is a crossover of Gone by Michael Grant, which is similar to The Lord of the Flies.
Enjoy.