Inspired by interviews with real-life cancer survivors and insider sports experience, this unforgettable "New York Times" bestseller shows a brave boy who learns what it truly means to be unstoppable.

Inspired by interviews with real-life cancer survivors and insider sports experience, this unforgettable "New York Times" bestseller shows a brave boy who learns what it truly means to be unstoppable.

*New York Times * bestselling author Tim Green has written an unforgettable story--inspired by interviews with real-life cancer survivors and insider sports experience--showing a brave boy who learns what it truly means to be unstoppable.

** "Absolutely heroic, and something every guy should read." (National Ambassador for Young People's Literature emeritus Jon Scieszka)**

If anyone understands the phrase "tough luck," it's Harrison. As a foster kid in a cruel home, he knows his dream of one day playing in the NFL is a long shot.

Then Harrison is brought into a new home with kind, loving parents--his new dad is even a football coach. Harrison's big build and his incredible determination quickly make him a star running back on the junior high school team.

On the field, he's practically unstoppable. But Harrison's good luck can't last forever. When a routine sports injury leads to a devastating diagnosis, it will take every ounce of Harrison's determination not to give up for good.