The hobby detectives “The Three Investigators” want to take a little break. So they take advantage of an offer from Peter's father, who has accepted a job in South Africa and wants to take the detectives there. But Jupiter, Peter and Bob wouldn't be the three investigators marks feared by the criminal world if they just lounged around in the sun on their vacation. So it's no wonder that the clever boys soon have their next case to solve...

"Are they corrupt?" After arriving in Cape Town, Johann and Inge are amazed by the swanky estate of their son Mark's future mother-in-law. His wedding to Nandi is to be organized by Rosa, a childhood friend of the groom who has flown in from Berlin. Of course, no one could have imagined that after thirty years, Rosa and Mark's fire would flare up again...

In the near future: Europe is in chaos. Right-wing extremists have taken power in many countries. The democratic state that once was Germany has become a totalitarian system that persecutes dissenters, Muslims and homosexuals. Jan Schneider has stood as a lawyer on the side of dispossessed victims. When he learns that the regime wants to jail him again, he decides to flee with his family. His goal is the South African Union, which enjoys political and economic stability after an economic boom. A freighter is to bring him, his wife Sarah and the two children Nora and Nick together with other refugees to Cape Town, but the tugs abandon their passengers in much too small boats off the coast of Namibia. On rough seas, it comes to disaster, the little Nick is lost, and no one knows if he could reach the shore...

What is supposed to be a marriage boot camp on a remote island turns into the ultimate test for survival when a 6-headed shark starts attacking the beach. Trapped with minimal weapons they try to fight off the shark, but quickly discover that no one is safe in the water or on land.