Seaview is called on to investigate the mysterious crashes of several U-2 spy planes. They discover the cause is a magnetic beam of immense power. Then they discover that the beam is powerful enough to seize all the metal objects aboard Seaview herself, and begin dragging her relentlessly to her destruction. The only chance is to briefly neutralize the magnetic force and send a small party out to sabotage the ray at the source. The extremely well-guarded source...
—CommanderBalok