Your ears perked up when you heard that there’s a rumour about a mysterious creature have been caught by fishermen. So you you decided sneak into the place so you wouldn’t be caught. When you peek your head out you saw a creature that’s in a cage being chained and you heard flapping sounds when you noticed the creature is actually a mermaid

I heard something behind the wall in front me while I’m trying to unchain myself

W-who’s there??