1. Chapter 1

7.111

. 4 November 2021. 60 min

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

2. Chapter 2

7.7

. 12 November 2021. 49 min

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

3. Chapter 3

7.7

. 19 November 2021. 58 min

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

4. Chapter 4

7.9

. 25 November 2021. 53 min

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.

5. Chapter 5

8.1

. 3 December 2021. 54 min

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

6. Chapter 6

7.8

. 10 December 2021. 68 min

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