I en värld som ödelagts av en pandemi virus som förvandlar människor till primitiva och blodtörstiga varelser, Marco and Sonia set off to find a secret base to escape from the ‘mutants’. When the latter attack them, Marco is infected too. Little by little, he undergoes the same changes. Sonia, who is expecting a baby, is then forced to fight her worst enemy, the man she loves.