A tearful Simone Biles takes fans behind-the-scenes of her struggle with the twisties at the Tokyo Olympics

• Fans can see Simone Biles' Olympics lead-up via her Facebook Watch docuseries, "Simone vs Herself."
• Now, the "Versus" series is taking viewers behind-the-scenes of Biles' time in Tokyo.
• In a teaser, Biles records a tearful video from the games explaining her struggle with the twisties.

During Simone Biles' run at the Tokyo Olympics this summer, she endured a public battle with the twisties - a dangerous phenomenon that causes disorientation in the air.

Now, nearly two months after Biles' tumultuous games and eventual triumphant return, the megawatt American gymnastics star's Facebook Watch docuseries, "Simone vs Herself," concludes with two final episodes that offer fans a behind-the-scenes look into her heartbreaking struggles in Tokyo.

In a teaser for the next episode of the "Versus" docuseries produced by Religion of Sports, Biles records a tearful video diary from the confines of her Tokyo accommodations. She explains the onset of "these mental blocks in the gym" - aka the twisties - that she was experiencing in real-time.

"It's not been fun - it's been scary," Biles says, choking up. "I'm getting lost in my skills."

"It's getting to a point where it's becoming dangerous," she adds.

The second half of the teaser gives viewers a feel for Biles' strength and resilience. The 24-year-old seven-time Olympic medalist states plainly that she's "worth more than gold." Despite some people's perception that she quit by pulling out of the team final and subsequently withdrawing from four individual events, Biles explains that she knows better than to view herself in that light.

"People are like 'Oh, she quit,'" Biles says. "But I'm not a quitter. I'm a fighter."

The two-part finale of "Simone vs Herself" - with never-before-seen footage from the Olympics - airs on Monday, September 27 and Tuesday, September 28. But in the meantime, you can check out the teaser for the episodes below: