Zach is riding the Greyhound bus through a snowstorm to visit his older brother Derek, whom he hasn't seen in seven months. That's when their parents finally went broke paying Derek's doctor's bills and had to give him up as a ward of the state. Nothing--not drawing in his sketchbook, not basketball--lets Zach forget that his brother is living in a mental institution five states away. But surprisingly, sitting next to a talkative teenage girl he...