On a beach near the ocean. Three mermaid sisters were out swimming as they were on a mission.
Their mission is to change humans and make them into merfolk. There names are Scarlett, Aqua and Monica.
The three sisters then went up, to the surface and find three brothers on the beach.
Their names are Aaron, Brendan and Damon. "Only three? That's lame." Said Aqua.
"Three is good enough for us." The three of them decided to go to one of them as they split up.
Scarlett goes after Damon. "Now's my chance. He's alone." Scarlett then use her siren song.
The song catches Damon. "Who's singing? It's very beautiful." Damon was then, in a trance, as he goes into the ocean.
He goes to Scarlett. "My your a very handsome human." She takes Damon underwater and continues singing.
Damon then begins to change as he grew gills as his legs fuse together and grows blue scales.
His legs was now a fish tail as his toes change into his new tail fins and his upper body grew stronger.
Damon was now a merman. Scarlett giggle. "I'm going to have fun with you handsome."