Cate travels to Japan to get answers about her father and uncovers a shocking secret.
Monarch closes in on Cate, Kentaro and May; Keiko, Lee and Billy stumble on a major find.
Shaw leads the team on a mission to Alaska; Keiko, Lee, and Billy present their findings.
The team is left stranded in the frozen tundra after a narrow escape.
Cate recalls G-Day as she treks through the ruins of San Francisco with Kentaro and May.
Shaw finds an unlikely ally within Monarch; Keiko and Lee grow closer while at a military ball.
May finally faces her past; Duvall and Shaw follow traces of Godzilla and Hiroshi.
The team goes back to where things all began to confront Shaw; Monarch takes drastic measures.
Two siblings strive to uncover their family's connection to a secret organization and to monsters.
Two siblings strive to uncover their family's connection to a secret organization and to monsters.