“Jija†Yanin Vismistananda plays a young autistic girl, Zen, who grows up next to a Muay Thai boxing studio. Through observation, Zen absorbs the teachings and the techniques of Muay Thai. When her mother’s hospital bills start escalating, Zen and her cousin set out to collect debts from the gangsters that owe her mother money, which leads to an escalating series of death-defying fights.