Two years after the Helghast assault on Vekta, the ISA are taking the fight to Helghan. Their goal: to capture the Helghast leader, Emperor Visari, and bring the Helghast war machine to a halt. You assume the role of Sev, a battle-hardened veteran and a member of the special forces unit known as the Legion. For Sev and his squad, the invasion of Helghan is just beginning. Tasked with securing Pyrrhus, the Capital City, they quickly discover that the Helghast are a formidable enemy on their home planet.