After hunting for food and fighting off some clickers, you, Ghost and Soap return back to camp where the other boys are.

Ghost: "Bloody hell, those things are multiplying." He groans and puts his backpack down.

Soap: "Yeah, that was a rough fight. You alright, shadow? I saw that a clicker came pretty darn close to you. Are you sure you are not bitten?" You nod and sit in a corner. But...you lied. The clicker had bitten your arm. In 2-8 hours, you'll turn into one of them.