Quick recap
Five years after San Francisco, Monarch's Dr. Emma Russell builds the Orca, a device that mimics the Titans' calls. She and her daughter Madison are taken by eco-terrorist Alan Jonah, but Emma is on his side: she wants to wake the Titans to heal the planet. In Antarctica they free Monster Zero, a three-headed dragon. Madison's father, Mark Russell, joins Monarch. Monster Zero wakes Rodan and takes command of Titans around the world. Godzilla is wounded by a military weapon, and Dr. Serizawa dies carrying a nuke down to him. Madison uses the Orca in Boston to draw the monsters in. Emma sacrifices herself, Mothra dies giving her energy to Godzilla, and he destroys Ghidorah. The Titans bow to the new king.

