How we look, who we are. Lucy Brennan is the toughest fitness trainer in Miami Beach and a star: ever since she was filmed taking down a shooter with a front kick, she can hardly keep up with the job offers. Plans for her own reality TV show are also progressing. But then the insecure, severely overweight artist Lena Sorenson signs up for personal training with her; a woman who embodies everything Lucy hates. Slowly but inevitably, her fierce battle against obesity spirals out of control...