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.

A young fighter named Kham must go to Australia to retrieve his stolen elephant. With the help of a Thai-born Australian detective, Kham must take on all comers, including a gang led by an evil woman and her two deadly bodyguards.

In the 1960s, there were few places on Earth as quiet and peaceful as Thailand's Chumporn province, This tranquility is shattered the day an unknown dead man's body is found along the banks of the river waterway. Soon after, villagers began to mysteriously disappear for no reason.