Marinette Dupain-Cheng, a miraculous princess of the waters.

One day, Marinette is swimming around when she sees a blonde haired teenager fall out of a massive yacht and saves him.

Adrien Agreste, Miraculous Highs most punny, rich and hottest boy. Adrien goes to Chloe's party with his friends and falls off the ship.

All he can think about is the girl with the Raven hair and bluebell eyed girl that saved him, the thing is, he doesn't think it was any girl.

He thinks it was a mermaid.

Marinette Dupain-Cheng is offered the chance to travel to the human world if she promises to visit and stay away from HawkMoth.

Marinette goes to Francoise DuPont and Adrien is sure she is the girl who saved his life...

He's pretty sure she's his mermaid.