“Why We Fight,” a documentary series executive produced by UFC champion Ronda Rousey about a talented but troubled young boxer, is set to premiere on Verizon’s Go90 free video service later this month.

The series follows Zac “Kid Yamaka” Wohlman on his pilgrimage across the globe, where he encounters fellow fighters with their own issues and reasons for stepping into the ring. “Why We Fight,” comprising eight 45-minute episodes will premiere Oct. 18 on Go90.

The series was inspired by the short film “Kid Yamaka” directed by Matt Ogens. It’s produced by Dirty Robber and Religion of Sports, the sports-media firm founded by Gotham Chopra, Michael Strahan, Tom Brady. “Why We Fight” is distributed on Complex Networks’ digital channel on Go90.

“‘Why We Fight’ epitomizes Go90’s vision of providing fans with content from exceptional producers that they can connect with on an emotional level, all while bringing them deeper inside the world of their favorite sports,” said Ivana Kirkbride, Go90’s chief content officer.

Wohlman, who grew up in the San Fernando Valley, battled with drug addiction throughout his childhood and has become hooked on opioids after an injury — a disease threatening to destroy his career. The docu-series follows him on a journey to heal his wounds. In the first episode, Wohlman travels to Tijuana, Mexico, to study the art of boxing.

“Why We Fight” is executive produced by Rousey, the Ultimate Fighting Championship’s first female bantamweight champion and an Olympic medalist in judo. Executive producers for Dirty Robber and Religion of Sports are Gotham Chopra, Matt Ogens, Martin Desmond Roe, Chris Uettwiller and Adam Feinstein, along with Complex Networks’ Justin Killion and Melanie Moreau.

The series joins the steadily growing lineup at Go90, which now features 1,400 hours of originals and 25,000 hours of licensed TV shows and live sports. Verizon launched the mobile-focused, ad-supported video service two years ago — targeted at millennials — but hasn’t revealed any usage metrics. Complex Networks is a 50-50 venture owned by Verizon and Hearst that incorporates their acquisition of Complex Media.