The Spencer Mansion Incident is a deadly outbreak inside the sprawling estate of the Umbrella Corporation’s founder, Oswell E. Spencer. Beneath the mansion’s elegant facade lies a secret laboratory where the T-virus was created. When the virus escapes containment, the mansion becomes overrun with zombies, mutated creatures, and horrifying bio-organic weapons.

S.T.A.R.S. Alpha Team arrives to investigate the disappearance of their Bravo Team and uncover the truth behind the bizarre murders tied to the mansion. Players face relentless attacks from undead humans, savage Cerberus dogs, the terrifying Tyrant, and other monstrous entities. To survive, they must solve intricate puzzles, avoid deadly traps, and piece together the dark secrets of Umbrella’s experiments.

The incident reveals the catastrophic consequences of genetic manipulation and corporate corruption, setting the stage for a worldwide biohazard outbreak. Players must navigate the mansion’s horrors and escape with their lives before becoming permanent victims of the virus.