Abel Hewson and Captain Bellew become love rivals for 18 years old Josita.

Both men go on a dangerous mission to salvage a floating wreck carrying explosives which will detonate on contact with any water, on which this rivalry comes between them and their work.

The tug-boat crew also resent Abel Hewson being made their First Mate, especially Gorman.

[4] Stanley Baker and Cy Endfield had previously teamed on Hell Drivers.

[6] Sky Movies wrote, "A host of good actors, including Robert Shaw and Barry Foster, add meat to the minor roles in this tough action film.