Jack Courtney has lived in the UK his whole life. But this summer his parents are travelling to the Democratic Republic of Congo for a conference, and they've promised to take Jack and his friends with them. When his parents go missing, abducted by mercenaries, it's up to Jack, Amelia and Xander to brave the jungle, investigate the local mines and try to find them. With gorillas, bandits, poachers and an annoying cousin in the mix, the three teenagers will need their wits about them if they are to save not only Jack's parents, but their own lives too ...