Ex-Met Inspector John Cannon is always promising his partner Liz a holiday. But their hectic life running a busy Lincolnshire pub means they can never find the time. When someone is murdered after a particularly raucous quiz night, a wealthy businessman is driven to seek Cannon's help. Their life is overthrown following this night. They must embark on a precarious sea voyage to the frozen wastelands of northern Norway in pursuit of the suspect. But an attempted murder on-board and the hazardous waves are cruel reminders that this is no holiday. A crew member dies and Cannon jumps ship once he has uncovered the suspect's identity. For how long will they be able to evade the murderer and icy waters?