The film starts with a look at Rousey’s humble beginnings in Jamestown, North Dakota, where she peers through the window of a dojo, watching boys inside spar Judo.

The parallel storyline introduces rising star Holly Holm, preacher’s daughter from Albuquerque, New Mexico. She is seen as a 16-year old leaving aerobics class, taking the first punch of the bag.

The story unfolds through actresses playing younger versions of the fighters. Ronda’s mother, Judo instructor Dr. AnnMaria De Mars plays herself, sparring with teenage-era Rousey, played by Ronda’s younger sister, Julia De Mars.

The scenes get more intense with time. Rousey’s ferocious spirit is chronicled in the principal’s office with a bloody lip and winning an Olympic bronze medal. Holm’s story is depicted through glimpses of her at church with a black eye; her loss against Anne Sophie Mathis; and getting back in the ring with Mathis to win.