in the end, wilson and grenchko's overconfidence proved to be their undoing, as well as them being unknowing that nuclear pollution was in the bering sea that could mutate the dinosaur into godzilla, who returned to japan, possibly due to sensing king ghidorah. wilson ordered king ghidorah to be sent to kill godzilla and while king ghidorah has the upper hand in the beginning, a disillusioned emi and terasawa sabotaged the computer controlling king ghidorah with the help of a reprogrammed m-11, allowing godzilla to hand the three-headed monster a crushing defeat. the three then knock out wilson and grenchko and teleport mother to the battlefield before their emergency override could take them back to the future. while king ghidorah was stunned by godzilla's nuclear pulse and the loss of his middle head, godzilla blasted mother with his atomic heat beam, destroying it and killing everyone aboard. afterwards, king ghidorah attempted to flee, but godzilla blew a hole in one of his wings with his atomic heat beam, sending him falling into the ocean, before godzilla began to rampage through japan. emi and m-11 returned to their own time to resurrect king ghidorah with cyborg technology in order to stop godzilla's rampage, guessing that the cold sea water would preserve the golden dragon's body. she returned to the present piloting a cyborg version of the dragon named mecha-king ghidorah, and eventually defeated godzilla before returning once again to 2204, but not before revealing that she was terasawa's descendant. in the manga version, emi dies as she is about to depart when godzilla shoots his atomic heat beam out of the ocean.