In Underhell, you play as Jake Hawkfield, a Special Weapons and Tactics officer who recently married and moved in with his wife. But soon after this happy event, his wife dies under mysterious circumstances, leaving only clues that suggest she committed suicide. Jake falls apart. Only his boss, mentor, and best friend Frank is there to help him get over his grief. The mod begins with a wake up call from Frank ordering Jake to come down to the station. An armed group of highly trained soldiers have taken control of a hospital and all its personnel. But Jake will soon realize that this is more than just a hostage situation.