An expert team of heavy haulers attempts to transport a massive World War One artillery gun 400 miles from the Royal Artillery in Wiltshire to a museum in Utrecht, Holland. The rare 200-ton gun was designed to be moved around the Western Front on rail lines. But for this move the team has no option but to travel by road and sea. They must battle to separate the huge cast iron barrel from its railway carriage, and load both huge sections for an epic truck trip across southern England. A treacherous North Sea voyage awaits, followed by the daunting task of re-assembling the monster gun in Holland – if it fits into the exhibition hall that is. Time is tight – there's no room for delay. Will the team get this antique army relic in place for its grand public unveiling?