Chapter 1

Sewon, a research-obsessed brain scientist, gets devastating news that pushes him to advance a risky brain-sync system in search of answers.

Chapter 2

Intel from a private investigator drives Sewon to conduct more brain syncs, leading him to believe his wife, Jaeyi, was right about their son Doyoon.

Chapter 3

Sewon’s investigation makes him a target, and he discovers a disturbing truth about the private investigator that rocks both their worlds.

Chapter 4

Heejin, the daughter of a man connected to Jaeyi, sheds new light on Sewon’s home life and shares more details about what happened to Doyoon.

Chapter 5

Sewon confronts the mastermind pulling the strings behind his ordeal and setting in motion the diabolical plan involving him and his family.

Chapter 6

Season finale. Harnessing the power of his unique brain and the knowledge of those he synced with, Sewon risks his life to save his family.