The famous pilot Ellissen (Hans Albers) helps his friend Droste (Paul Hartmann) to have FP1 built, a platform in the middle of the Atlantic Ocean which will make a connection between the continents possible (in a time when non-stop flights with passengers were science fiction). During the years when FP1 is built and Ellissen is far away, his girlfriend Claire (Sybille Schmitz) falls in love with Droste. Saboteurs try to destroy FP1, so Ellissen must come to the rescue. "FP1 antwortet nicht" is an excellent piece of work for its time. First, the science fiction novel by Curt Siodmak provided a spectacular story. But then, Albers portrays a really interesting hero, a man who often doesn't succeed (he loses his plane in a crash in Australia, he loses Claire to his best friend) but always comes back. Claire tried to teach him the advantages of a normal life, but no, it will always be adventure for him, "life is too short", he once says. With this charismatic performance, it is easy to see why Albers was one of the most popular stars of his time. Peter Lorre of "The Maltese Falcon" fame is responsible for the comic relief here as a photographer who tries to get the first picture of FP1. Last not least, a memorable musical score with the theme song "Flieger, grüß mir die Sonne" contributes to the fame of the movie.