Serenity Falls
On a beach near an isolated Resort, there is a Cave. It rarely appears, and only a select few have ever found it... but any that do are imbued with a strange power. They are changed. Some say corrupted. They become stronger. Strangely compelling. They can even shape and influence the minds of others - instilling lust and desire. Controlling and binding people to them... forever.
The Cave is a mystery. The abilities it grants... impossible.
As it's power grows, more and more people are drawn into the web of temptation and corruption.