When 12-year-old Alice hears that she will spend the summer holidays with her friend Tarun, she is overjoyed. But once the young girl has arrived in Northern Ireland, Tarun’s mother, the marine scientist Jaswinder, is robbed at her research station by thieves who also take top secret documents. Together with her friends Johnny, Clarissa and Hanna, Alice wants to find out why. When they meet the garbage dealer Robert Fleckmann in Germany, who knows far too much about Jaswinder’s research project, the friends get suspicious. Finally, Tarun’s mother disappears without a trace. But she has recently found a way to get rid of the plastic waste in the sea. But the owners of the world-wide toxic waste industry dislike her plans. Patrizia and Oliver, Jaswinder’s two assistants, are also acting strangely now …