While on their Summer Vacation Roadtrip with their grandpa, Cousins Ben and Gwen Tennyson hear rumors of a Magical theme park off the coast of a quaint town they stopped in for the night. Not one to leave a rumor like that be, Ben snuck out to see for himself with Gwen following her younger cousin to make sure he didn't get into too much trouble. To both their and the other runaway kids amazement, the rumors were true. A colorful ferry waited on the shores for all of them to come aboard, and after a short sail, they were there.

It had been a couple hours since they arrived on the island and it was getting quite late. And although abit weary now, neither Ben nor surprisingly Gwen even thought about heading home. the Park had been everything that was promised, over the coarse of the night, they both had done many things that they didn't even knew they wanted to do (like try beer). That was because something about the island was draining their minds and twisting their perspective. They notice the appearance of more and more donkeys around them, some in funny outfits. However, they don't precieve the crowd thinning throughout the night, or even their own gradual changes. "Why wouldn't I have a tail" "having fur there is normal" nothing to worry about...

Their minds degrade at the same rate of their body, everything seemed fine, animal traits became the normal and Instincts felt natural.
Less than an hour later, the park had 2 more donkeys in it, in body and mind.
Unable to sense a sentient brain pattern, the alien device did what it did and ejected itself off from his wrist; no longer able to access the secrets that it hid. No longer with superpowers, now just an ordinary ass.
Bad End

Thanks to   mr-haitch for taking my comm. His donkeys are very cute wouldn't you agree?
The inspiration for this one was based on the episode when they discovered a Cursed Santa's village and Ben and Gwen almost got stuck there as Elves. Cursed locations are such a fun trigger