Henry and Asako look to the past to provide answers to their current turmoil; Chester and Luz grapple with their identities in hopes of saving those who are dearest to them; Amy and Yamato-san struggle to once again assimilate into American life.
The Terminal Islanders return home to find that things have changed since they left; the Nakayamas, still tense from the pain they've inflicted on one another, must come together to battle the spirit that threatens their future.
Chester and Luz have reached a turning point in their relationship; Amy must take matters into her own hands as she's tormented by a powerful nemesis; Chester meets a boy who gives him answers.
The Nakayamas have been torn apart; Chester searches for the person he believes can help, by any means necessary; an outbreak in the community forces Amy to act, though she's caught between doing what she's told and doing what's right.
A story of the past provides insight into the present evil that stalks the Terminal Islanders; Chester returns home to his family; Henry and Asako are faced with a difficult decision.