A parasitic alien soul is injected into the body of Melanie Stryder. Instead of carrying out her race's mission of taking over the Earth, "Wanda" (as she comes to be called) forms a bond with her host and sets out to aid other free humans.

A chance opportunity arises for Robert Atkinson, a London banker who risks his bank's money to leave the mundane behind and start a new life. To take advantage, he unwittingly signs up with a Chinese cartel to transport a briefcase to Amsterdam. But all is not as it seems in a city veiled by dark secrets. Fuelled by power players, drugs, seduction and violence, Robert awaits his turn in a deadly game of choice and consequence.