Acclaimed Thai action director Prachya Pinkaew helms this martial arts drama, which follows Zen (JeeJa Yanin), a young autistic woman who discovers that she has the uncanny ability to absorb precision fighting skills just by watching martial arts movies. When her cancer-ridden mother's creditors come calling, Zen attempts to settle the debts by standing up to a hardnosed gang of criminals who have wrongfully swindled money from her family.