TGV is the name of a fast bus driven by Rambo, connecting Dakar to Conakry, Guinea. Before taking the road, Rambo and his passengers are warned of a possible danger : the Bassari tribe have rebelled at the border... Hearing this, only a few passengers decide to attempt the journey with Rambo and his assistant Demba. A dismissed minister, his wife, then Roger and Sylvia, are joining the group. Through these dangerous and unexpected events, the personalities of each one will be revealed as relationships start to develop...