It is 1943. A Russian convoy fights its violent, wreckage-strewn course across the Arctic Circle towards Murmansk. Many gallant vessels will be destroyed in that hazardous endeavour, all crewed by incredibly brave men. Except for one - the coffin ship Charon. She plays host to an appalling complement of misfits and is captained by Edward Trapp - professional scoundrel, international pariah, blackguard without merit.
Bill Walker, a veteran Royal Military Police staff sergeant, carries a dual burden. The first is to maintain his hard-as-nails Redcap image, at odds with the real Walker. The second is simply to stay alive, not easy when his commanding officer has sworn to destroy him.