INTRODUCTION
KEY: B = Video Game Universe, I = Movie Universe, U = TV Universe
Primary Setting: Hill Valley, CA 1998
Breakdown of Plot:
Resident Evil (Video Game Universe):
After "surviving his apparent death in the first game by injecting himself beforehand with an experimental virus, provided by his former Umbrella colleague William Birkin" (Wikipedia), a superhuman Wesker uncovers his highly confidential project of a Space/Time Dimensional Teleportation Mechanism to broaden the horizons for the T-Virus. The dimension that Wesker ends up in is that of the universe of Marty McFly and Doc Brown (Back To The Future). This happens due to the simultaneous rift in the space-time continuum by both Wesker & Marty and Doc, who are returning from yet another time travel for Wesker, the mechanism overloads and he is stuck in Hill Valley for the time being, but must find an alternate route to the other dimensions as well as back home!
Back To The Future (Movie Universe):
It's been 13 years since Marty and Doc saved their own lives after manipulating the space-time continuum. Marty, who is now 30, and Jennifer are happily married, living in Hilldale, and just gave birth (August 10, 1998) to Marty McFly Jr. Marty and Doc, in this timeframe, are returning from a visit to the future, 2012, to witness the election of the first woman president. This happy life Marty has will go awry when Wesker arrives as Marty and Doc return from their adventure to plague their lives with the T-Virus!
Halloween (Movie Universe):
A month after the outbreak has consumed Hill Valley and other select areas of California, the massacre at Hillcrest Academy High School is committed by none other than Michael Myers. Laurie Strode believes she has successfully stopped her brother by decapitating him, but has instead killed a larynx-crushed paramedic that Michael switched places with in order to continue his killing spree to kill his sister. Before anyone discovers the truth, a wave of zombies emerges and attacks everyone at the crime scene. Laurie is separated from her son, John Tate, and his girlfriend in the chaos. Weeks pass and Laurie has survived the outbreak thus far given her experience with her zombie-like brother. She plans to find her son with hopes he's still alive. Despite this, she is looking for answers to what is happening and ultimately ventures to Hill Valley. Little does she know, her alive and well brother is en route to Haddonfield, but crashes his car in Hill Valley. With this Michael Myers must also survive the outbreak, and does so, as he blends in well, can fight off any zombie attacks, and gives no mercy to any other survivors!
Spider-Man (TV Universe):
Spider-Man, who has just finished his battles in the Secret Wars, is brought to this dimension by the Beyonder (instead of the alternate New York), Beyonder stating that it is a much large threat than imaginable and needs to be defeated before moving onto his next task. Spider-Man, clueless as to where he is, attempts to uncover clues as to what villain he might have to defeat!