Back to the Future: Biff to the Future #5

It's the 1980s, and as Biff proceeds to remake the Hill Valley town square in his image, his personal conflicts with Lorraine McFly and her kids are reaching the boiling point. Meanwhile, the reclusive Emmett Brown is forced into action, revealing to a few trustworthy citizens a secret invention that has the power to stop Biff: a time machine!