This gripping and heartfelt narrative delves into themes of combat, fervor, and self-sacrifice. Between 2016 and 2018, the filmmakers followed Joanna Jedrzejczyk, a celebrated UFC champion, as she dominated the realm of women’s MMA. To maintain her status, the Polish athlete must continually face off against her rivals and push her body to its limits, enduring extraordinary physical demands repeatedly. “Invincible” offers an unfiltered look at the hidden battles of contemporary warriors, candidly exposing the blood, sweat, tears, and profound solitude that accompany the pursuit of worldwide athletic success.