Mark, Rubin and Scotty were all SAS soldiers and part of a team of soldiers with no family or friends to mourn them if they died and if they died they were buried where the lay and no one would know, then one day on a patrol Scotty took a bomb and ended up in a wheel chair then Mark's corporal next to him took and bomb which killed in and took off Marks bottom part of his leg, and then they knew there were no longer part of the ghost squad and had to come back to the place where they were born and start a new life, but later on they would be drawn together once more as the ghost squad, when Marks wife Lucy is assassinated down by a hired hit man some years before her father's factory was taken down by a planted bomb, and Mark must find out who did this and take retribution with the help of his own ghost squad