Pee Mak is a 2013 Thai comedy horror film directed by Banjong Pisanthanaku. The story is an adaptation of the Mae Nak Phra Khanong legend of Thai folklore. It was released on March 28, 2013. The film stars Mario Maurer as Mak and Davika Hoorne as Nak, together with GTH's iconic gang of four: Pongsathorn Jongwilas, Nattapong Chartpong, Auttarut Kongrasri and Kantapat Permpoonpatcharasook.

In the Rattanakosin Kingdom, Mak (Mario Maurer) leaves his pregnant wife Nak (Davika Hoorne) to join the war and meets four soldiers who become his best friends. During this time, his wife Nak struggles to give birth to their baby.

Pee Mak has earned more than 1 billion baht ($33 million) in revenue worldwide (mostly in Asia), and is currently the highest-grossing Thai film, beating the record of Ong-Bak and one of Asia's highest grossing films of all time. The film sold a record 16 million tickets worldwide. The film has been screened in Indonesia, Hong Kong, Myanmar, Cambodia, Australia, Malaysia, Laos, Vietnam, Taiwan, Singapore, Philippines, China, South Korea, parts of the South Pacific and parts of the United States.

According to wikipedia.