Hector Johnson is a wealthy man. A very wealthy one.
Well, being a successful businessman in female slave trading helps a bit to buy a nice sailboat for holidays.
And this first boat trip is the perfect moment for the W.A.S.P. (World Anti-Slavery Police), an unofficial organisation which fights slave trading all over the globe, to send one of their killers to eliminate such a monster like Horatio. This is a good opportunity for Mila, a fresh recruit of the organisation, to prove herself that she's ready for action. But theory and practice can be pretty different things...