This adventure melodrama concerns Vic Brennan (Stephen Boyd), who persuades his family to put up money for him to leave Dublin for the remote African town of Jebanda in order to start up a truck-hauling business. The family agrees to give Vic the money under the stipulation that his cousin Samuel (David Wayne), a bank clerk, go with him to protect their investment. Vic and Samuel arrive in the Ivory Coast along with Vic's bride Marie (Juliette Greco). Samuel loses their customs papers, and Vic's truck is impounded. Luckily, Marie recognizes a friend, a French naval captain, and he gets Vic's truck released. They then proceed onward toward Jebanda, but they have nothing but bad luck along the way --their truck crashes into a tree, and Vic has to bribe the natives with some beer to get the tree removed; a German guide tries to steal their cargo; and the African sun makes Samuel delirious, and he declares his love for Marie. Finally, the truck reaches a raging river. They try to cross it, and Vic is knocked unconscious by a log. Samuel must now find the courage to rescue Vic and continue on to Jebanda.