Northwest Europe has been under siege by a massive and unstoppable creature. The Beast's pathway has cause mass destruction across Italy, Switzerland and Belgium, resulting in the death toll of millions. The creature now making landfall on England, its pathway plowing through London as the US and U.K. try their best to impede the leviathan while civilians are evacuated from the city. Two US marines were on mission to find and rescue civilians when their helicopter was struck down, now the soldiers themselves are stranded within the battlegrounds and must find their way out or die trying. Lieutenant Rodrigo Hernandz and Matin Graham knew what to expect, however they could never prepare for the horrors they will witness.