You stood up, cast your shirt aside, dropped your pants, and waded into the shimmering waters to join your wife. The water felt slightly chilly at first, but you quickly got used to it, especially with the sight before you sending your blood pumping. You reached your waiting wife and wrapped your arms around her.
"So what do you think of the legend now?" she asked.
"I think you'll be eternally beautiful to me whether you bathe in a magical waterfall or not."
The two of you kissed passionately and soon you were making love in the waters under the glow of the moonlight. It felt like your best and most passionate sex together ever. Maybe there was something in the water as you were in no hurry to leave.
---
The next morning the two of you made your way back to the trailhead and thought nothing more of the romantic evening for the next month.
Four weeks later you had the most vivid dream that you were back at the waterfall, but something was different. You heard strange animal noises. Something unseen grabbed you from the water and was pulling you in. You woke in a cold sweat. You get out of bed and look out the window. The moon is almost full. You return to bed, but sleep uneasily. Something doesn't seem right.
The next morning you talk with your wife over breakfast. She had similar nightmares. Throughout the day your thoughts keep coming back to the waterfall, the full moon, and your dream. As the day goes on you start to feel a bit unwell. Are you coming down sick? The drive home seems to take forever as the sunset and moonrise inch closer. You're still feeling a bit lightheaded and your skin has gotten itchy. The romantic night at the waterfall is now dominating your thoughts and you're feel horny.
You barely make it through your front door before collapsing on the living room floor. You somehow know the full moon is about to rise again. And that's when the changes begin...