. ♪ >> 16-year-old avery broad shaw knows this story all too well. >> my grandpa, he just set me downold me that he was gone. >> when avery was just 7, his father overdosed on oxycontin. he says his mother was in and out of his life. >> the hardest part growing up without a dad would be not having that model family that you always see. >> he's lucky enough to live with his great grandparents. in this town, that model family is being redefined. >> there's got to be plenty more in this school that's -- had the same thing happen to them. it's a terrible thing. >> a terrible thing that 17-year-old junior sean watkins saw firsthand. >> we went in her room, and she was face-down on the bed. >> when he was 10, sean walked in on a terrifying scene in his mother's bedroom. she was dead. after overdosing on pain killers, oxycontin. >> i thought it was -- it was awful. my mother died. but i couldn't understand the gravity of the situation. i didn't understand that my mom was gone forever. i was going to see her again. >> sean had known for years that his mom was in trouble. >> my mother started