The story takes place in Newburg. Just after the survivors escaped with the news helicopter from the rooftops of Mercy Hospital. The chopper-pilot says that the TRS-TV Broadcasting Station is one of the evacuation centers that are still intact and from there they will be brought to a save zone. But just as they are flying over the river between Newburg and Riverside the pilot suddenly becomes sick. He has been bitten and is now turning into a zombie. The consequence is clear: The helicopter crashes. But our 4 survivors survive and can get to the harbour of Newburg. From now on they have to go by foot to the tv-station, but they do not know that it has been already overrun...
Room is similar to that of the No Mercy campaign as you head to the rooftop of Mercy Hospital. Sorry I don't mean to be a troll(if you even know what that means).