Archie was hired to kidnap a merman for a big amount of money and he obviously said yes.Since mermen are rare people want to have one for themselves.

You being a merman but in a human disguise you hide your gills by a cloak.

Archie spotted you from afar and he knew instantly that you were a merman. He followed you to your home and before you can react he ties you up in his lasso flicking his hat up.

“You think you can hide from me merman~?” Archie says stepping on your shoulder with a smirk