The Britannic, an ocean liner, is threatened by a bomber who demands a ransom in exchange for information on how to defuse seven bombs planted on board. A team of weapons disposal experts led by Fallon (Richard Harris) are then called to the scene. Meanwhile, a Scotland Yard detective (Anthony Hopkins) whose family happens to be on board the ship tries to track down the bomber. A tense thriller featuring good performances from a strong cast.
After a psychotic calling himself "Juggernaut" plants several bombs on board a luxury cruise ship, using booby trapped trigger mechanisms, a crack demolition crew must beat the clock trying to find and diffuse them, as the disgruntled ex-explosives expert ridicules them with mocking messages over the phone.