Mike Locken is one of the principal members of a group of freelance spies. A significant portion of their work is for the C.I.A. and while on a case for them, one of his friends turns on him and shoots him in the elbow and knee. His assignment, to protect someone, goes down in flames. He is nearly crippled, but with braces is able to again become mobile. For revenge as much as anything else, Mike goes after his ex-friend.
Doug is an awkward Florida drug addict. Divorced and alone, he shares custody of his young daughter with his ex. Doug's reeling from losing his job at a local strip club, where he takes care of the fish in the aquarium. Things are beyond bleak - so Doug zips his boat out into the Gulf to end the pain of his reality. But at his lowest point, he discovers an injured Mermaid creature clinging to life. For Doug, it's a sign from the Universe - so he brings her home, gives her shelter in his tub and begins to nurse her back to health. He even names her Destiny. As their rapport blossoms, word of his secret gets out and he is forced to protect his new friend by any means necessary.