What happens if you put the SAS team inside Mercy Chapter...this is what you get...A Call of duty 4 Crossover Left 4 Dead. Please don't flame me for the script writing style. I'm not from a English speaking country, My English is really bad...sorry guys!
Whilst exploring the underground sections of Der Riese the group find's a hidden secret and due to a teleporter acident end up in Mercy city. Please note i am currently puting this on hold for now as i have to get other ideas out of my head first.