Duk dum dui (2003)

After being offered a huge sum of money, four Thai guys go to Africa to investigate a region where a series of mysterious murders have been occurring. Complications arise when their travel bus has some mechanical problems, leaving them with no other choice than to go all the way on foot. On the way to their destination, in the wilds of Africa, they face plenty of problems such as a black stalker spirit, villager's ghost, a strange cannibal tribe and many other inexplicable spiritual phenomenons.