Lucifer's plan has been achieved with Jim Sinclaire's transformation into the warlock Lord Sin. With his new power, Lord Sin has begun opening the portal to Hell. Caleb (Angel Knight) has reluctantly teamed up with Detective Lisa Miller and they have made their way into the city, which is now overrun with demons. As they battle the demon horde, Caleb and Lisa get help from mighty angelic warriors known as the Cherubim. But Lord Sin has three powerful demon protectors known as the Black Warriors. With the demon horde and the Black Warriors standing in their way, will Caleb and Lisa reach Lord Sin and stop him in time to prevent what could possibly be Armageddon?