Heaven's Seven movie is based on the third part of an original film that was shown on 22 January 1963 in Thailand.
The story of the movie starts when group of seven Thai Army Black Panthers Division finish their last risky mission in Vietnam War.
Meanwhile, the seven Thai fighters learn that the trucks do not contain any gold, but they contain dangerous chemical agent that U.S. forces intend use to destroy forests in Vietnam.
Then, they go to the U.S. military camp to fight against the Americans and successfully rescue their people to save their friends and relatives.
Later, Chalern Wong Pim created a sequel of this movie called Heaven's Seven 2 (Thai: 7 ประจัญบาน ภาค 2 ) that was released on 28 April 2005.