Prolouge

The mafia boss, Reginald, is hopping to obtain enough rare treasures so no one will be able to touch them. Not cops or other gangs.
So when Burt unintentionally lures a mythical creature into the den of The Toppat Mafia, he has to protect his new friend's secret. wait, friend? That doesn't sound right.

Welcome to my MerMafia AU!