Witch camp

Bella Donna's very excited to be going off to her first witching Summer camp. When she arrives, with her stowaway cat, Pegatha, it seems to be just as magical as she thought it would be. But everything changes when someone casts a spell. The camp turns into a camp of nightmares. The waterfalls have turned into mud and the flowers into weeds. Bella has to find the spell caster and reverse the spell - but who cast it and why?