When you're in trouble and sinking fast, whom do you call? Piper Nelson is stuck. She can't quite stay away from the husband she divorced. She isn't always attentive to the high school students she teaches. And even she admits that she's been drinking too much and seeking out unsuitable men. Piper's mother, married to a celebrity evangelist, and her sister, who's immersed in plans to wed a professional football player and star in a reality TV show,...