A reformed criminal raises her daughter in a kung fu school, and the child grows up to be an autistic teenager with a remarkable talent for martial arts. When her mother develops cancer, the youngster becomes an underworld debt collector to fund treatment, coming into conflict with a deadly Mob boss. Action adventure, starring JeeJa Yanin and Hiroshi Abe. In Thai, Japanese and English.

Zen, an autistic teenage girl with powerful martial arts skills, gets money to pay for her sick mother Zin's treatment by seeking out all the people who owe Zin money and making them pay.