Watch Unterwegs nach Atlantis for Free: How to Stream the Movie Online at 123Movies. . At the end of the 19th century, German archaeologist Professor Bohmann is searching for the remains of the legendary island Atlantis. But he is not the only one who is trailing the myth. His adversary, the British scientist Sir Grey claims to have already found Atlantis. In different masks and guises, he sets cunning traps to keep off his adversary from finding Atlantis.