During events Hector Jefferson as American SEAL team member volunteered to join NATO forces. He got assignment to NATO fleet into covert operations team called "Black Dagger".
"Black Dagger" got many secret assignments(Mostly their priority was to gather intel and evidence about Russia part of probable mass murderers, acts against human rights and war crimes). During operation called "Sleep Well" things got out of control because of infiltrated Russian spy gave to mission target firsthand warning about soon approaching "Black Dagger" team. The ambush was not very effective, but still succeeded shooting down "Black Dagger" team helicopter and force it crashlanding. Luck was on ambushers side, because chopter got attacked by swarm of infected civilians at the crash site. Three members survived that attack but two of them got bitten during fight and started soon show out infected subjects pattern. There was no other way than shoot them. One night Mr Jefferson had to run from infected civillians because all ammo from weapons was depleted. Accidentally he hit his head severly against branch of tree that caused head trauma. The head trauma caused loss of memory about how he got here and where is this "here" at all. Mr Jefferson recalls only that his brother Jack might also be alive somewhere around and is hoping to find him.