After a year of rehab from a car accident that killed her parents, Tess Barrett is ready to go back to high school for her final semester as a senior. Blinded in the accident, she hires a "seeing-eye guy" as her personal assistant. On her first day back she gets emails from someone calling himself "Dad," asking her to find and upload computer files. But the e-mailer isn't the only one who wants whatever's in those files, and suddenly people around...