Quick recap
Kong now lives alone in Hollow Earth, while Godzilla guards the surface, napping in Rome's Colosseum. Jia, adopted by Ilene Andrews, starts picking up a strange signal. Ilene, Bernie Hayes and Titan vet Trapper head down to Hollow Earth. Kong, searching for others of his kind, finds a colony of great apes enslaved by the brutal Skar King, who controls Shimo, an ice Titan. Kong is beaten and frozen. Godzilla senses the threat and absorbs energy around the world to power up. The group learns Jia comes from the Iwi, who guard Mothra. Mothra is reborn and gets Godzilla and Kong to team up. The fight crashes through Rio de Janeiro and the world below. Kong kills the Skar King, Shimo is freed, and Kong becomes the apes' new leader.

