Sam (Leif Erickson) is desperate to escape South America for reasons. At a hotel he finds a group of people waiting to head to the US on a freighter. Clegg (Paul Brinegar), the radio operator from the ship, turns up wanting money from a man named Kroll (John Mylong), who has turned up at the hotel with Dr Yeager (Rudolph Anders). Clegg shoots Kroll but gets shot himself, Sam takes the opportunity to take Kroll's identity and get aboard the board.
However, there he discovers the boat has a false registration and the Captain (Barton MacLane) plans to detonate an atomic bomb with the help the reluctant Dr Yeager - his daughter Elsa (Virginia Gray) held hostage to force him to comply - and destroy the Panama Canal...
Not a bad budget B-movie though limited when it comes to action, the film also ends rather abruptly. However, the story is solid and is pretty well told.
