Attila, King of the Huns - the entire continent of Europe trembled in fear of this legendary leader. His life: victorious. His death: a legend. No one knows where he is buried. But there are some new clues.Researchers surmise the tomb of the legendary king is located in the Hungarian lowlands. Legends point us to his final resting place. Scientists and amateur researchers alike search for hidden clues - even under water. Accompanied by underwater archaeologist Attila Tóth, we set out on a journey to the depths of the Danube. Legend has it that Attila is buried under a river. Rock star Levente Szörényi, on the other hand, is convinced that Attila's grave lies in an old quarry. Spectacular experiments with weapons reveal how the Huns became a legend 1,500 years ago. Since then, his name has become shrouded in legend.