“T-Rex” is an intimate coming-of-age story about a new kind of American heroine. For the first time ever, women’s boxing is included in the 2012 Olympics. Fighting for gold from the U.S. is Claressa “T-Rex” Shields, just 17 years old, and by far the youngest competitor. From the hard knock streets of Flint, Michigan, Claressa is undefeated and utterly confident. Her fierceness extends beyond the ring. She protects her family at any cost, even when their instability and addictions threaten to derail her dream. Claressa does have one stable force in her life. Coach Jason Crutchfield has trained her since she was a scrawny 11-year-old hanging out at his gym. Jason always wanted a champion, he just never thought it’d be a girl. Her relationships with her coach and her family grow tense as she gets closer to her dream. But Claressa is fierce and determined. She desperately wants to take her family to a better, safer place and winning a gold medal could be her only chance.