Siren Phillips has lived her life thinking she's an ordinary girl, in an ordinary town. On the eve of her twelfth birthday, however, she learns that she is far from ordinary. Destined to turn into a Mermaid at the age of twelve, Siren must struggle with her new reality, saying good-bye to her mother and friends, while she transitions into the water. To make matters worse, a group of hunters are trying to catch her. She soon becomes friends with Adam Wilts, a new boy at school, who she turns to for help. He agrees to help her, but finds himself caught in the middle, when it's his own father who is after Siren. When Siren's mother is taken, the town must rally behind her, and help her make a peaceful transition into the water, before the hunters can find out where she is.
Duke is a crooked and music-mad police officer. Frankly, he's a really bad cop. He deals recreational drugs and loves to bully the citizens of Los Angeles. Among Duke's partners in the department are a sexually abusive policeman, an extortionist blonde, a family guy with a dubious past, and a one-eyed extremist who dreams of becoming a techno musician. Their once smoothly running corrupt scheme develops a critical flaw when a guy whom Duke shots by accident and stuffs in the trunk of his car suddenly turns out to be alive...