Why We Fight follows three Toronto-based martial artists whose battles inside the ring mirror the ones they face beyond it. Teen Muay Thai world champion Olivia Bahsous trains under her father, where love and ambition collide — and after signing with ONE Championship ("the Eastern UFC"), she's already scored an impressive debut win, with her popularity rising fast. Sara Bailey, the fastest Canadian ever — male or female — to win a boxing world title, navigates the intensity of being coached by her husband. And Cesar Bonilla, 40, returns to MMA after losing his brother and beating addiction, chasing one final shot at glory.

A film about the relentless pursuit of excellence — and the sacrifice, discipline, and perseverance it demands.