Hoping to reverse the two-decadeslong decline of boxing's popularity, specifically in his native South Boston, gym owner and former fighter Peter Welch formulates a revitalization plan. "The Fighters" documents his efforts to bring together rival trainers and amateur boxers to represent their gyms in weekly bouts. After seven days of intense training, the combatants face off in the ring with, perhaps, their professional futures at stake. Each episode captures the daily struggles, personal relationships and arduous gym sessions as the young men prepare to defend their pride as well as help save a sport that was once integral to the culture in "Southie." One of the series' executive producers is Dana White, a former boxer and trainer in Boston before becoming president of the Ultimate Fighting Championship, an organization for mixed martial arts.