A series of attacks on Earth caused by an extremist group from Mewni has caused tensions to rise between the two worlds. With war of the horizon, alliances are forged and battle lines are drawn as Earth and Mewni prepare for a clash that could tear the very Multiverse apart! As the heroes of the two worlds choose a side, one question remains: who will Marco stand with?

Kim Possible has betrayed everything she has fought for and has planted the seeds for Cobra's world domination. Can the heroes of Earth fight back and unravel the mystery surrounding Kim or will Cobra's reign over the world overpower them? Based loosely on the 2017 Marvel event Secret Empire.