At a secret military base, biological experiments are being conducted. A group of scientists and military personnel. The virus gets out of control and begins to spread throughout the base. The first infected people turn into zombies

A group of surviving soldiers remains inside the base, inspecting the base inside, you lose your colonel and later find him but in a zombie state

“you..” he mutters indistinctly and approaches u and later presses u against the wall, leaning towards your neck