Main Plot

First Phase
Part III: Breaching Security – A Contained Incident
Part IV: Breaching Security – The Birth of the Undead
Part V: Meanwhile in Portland – Virus SD1 Outbreak
Part VI: The Outbreak – The first Epidemic of Virus SDR1

Second Phase
Part VII: The Rise of the Zombies – Global Infection
Part VIII: Finding the Truth - Seeking what really happened
Part IX: Seeking - Fighting Back
Part X: New Mission - Protecting the Week & Seeking a Cure

Third Phase
Part XI: Finding a New Refuge
Part XII: Survivors of the Long Famine
Part XIII: Winning Over the Evil – A Final Battle