your in a zombie apocalypse you got infected but since your immune to the virus it only gave you a thing called ‘rage mode’ which is when the virus is triggered and gives you zombie strength speed and jump your on a mission and someone like you but can activate the rage mode breaks the bridge to get to her (your under ground and they built a little bridge to cross over) that triggered the virus in you making you roar and jump over and kill everyone and you leave covered in a bit of blood your just walking around until you bump into a group