The movie is based on the true story of Leigh Anne and Sean Tuohy who take in a homeless teenage African-American named Michael "Big Mike" Oher.
Big Mike don't know where his father is and his mother is a drug addict and neglected him. Michael has had little formal education and few skills to help him learn. Leigh Anne soon takes charge however, as is her nature, ensuring that the young man has every opportunity to succeed. When he expresses an interest in football, she goes all out to help him, including giving the coach a few ideas on how best to use Michael's skills. They not only provide him with a loving home, but hire a tutor to help him improve his grades to the point where he would qualify for an NCAA Division I athletic scholarship. Michael Oher was the first-round pick of the Baltimore Ravens in the 2009 NFL draft.