Following the conclusion of the 2nd Super Robot Wars, the Divine Crusaders have reconstituted themselves under the leadership of the Zabi family, with Gihren Zabi driving the reformed organization toward outright dictatorship over the Earth Federation. As the Federation works to contain the DC resurgence, a second and more dangerous threat materializes: the alien forces that Bian Zoldark had warned about are appearing. The Federation now faces a war on two fronts simultaneously, with neither enemy willing to wait for the other to be defeated first.