Nat Turner, a former slave in America, leads a liberation movement in 1831 to free African-Americans in Virgina that results in a violent retaliation from whites.

故事重返上世纪90年代，终极反派宇宙大帝从天而降，驱使以天灾为首的恐惧兽掀起地球危机。绝境之中，蛰伏许久的巨无霸终觉醒，联合汽车人变形出发，一场前所未有的决战即将上演。