JeeJa Yanin, Hiroshi Abe
, Pongpat Wachirabunjong, Taphon Phopwandee, Ammara Siripong, Dechawut Chuntakaro, Hiro Sano, Aroon Wanatsabadeewong, Anusuk Jangajit, Nattakit Teachachevapong, Sirimongkhon Iamthuam, Kittitat Kowahagul, Thanyathon Seekhiaw, Pirom Ruangkitjakan, Soumia Abalhaya
When Zin, former girlfriend of a Thai mob boss, falls for Masashi, a Japanese gangster in Thailand, the boss banishes them: Masashi to Japan, and Zin, with her small daughter Zen, to live next to a martial arts school. Zen is autistic, with uncanny swift reflexes. She watches the students next door and Muay Thai movies, absorbing every technique. She's now a teen, and her mother needs chemotherapy. Zin has taken in a chubby kid, Moom, who watches over Zen. Moom finds a ledger listing business men who owe Zin money; he goes to them one at a time to collect in order to pay for Zin's treatment. Zen, with her martial skills, becomes his enforcer. A showdown with the boss is inevitable.