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Arabella Fennlings, was cure from terminal disease at five years old, by highly illegal experiment drug that had no know ill effect that they knew of. Except one, every time she touched water she grew fins and gills. She became a real mermaid, so they never let her go, till head scientist died, she escaped because a sercuity error. Now she on the run knowing nothing about the outside world.

Maximum Knells, Billionaire and Bad boy/Gangster had a dangerous secret that he would kill to keep. His father was the miracle scientist that saved millions of lives. Blake just passed away of an heart attack, under suspicious nature. Leaving most of his business to his son Maximum, but he left Science Project 17 to Richard Jennick his second in command.

Fate makes them both meet, and Arabella saves Maximum from drowning after someone blows up his ship. Because once a gangster always one. Maximum wants to repay her and at the same time make her his. But this is the start of their problems.