Season 1

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  7.1/10315 votes

  Chapter 1

  Season 1 Episode 1 - Aired 11/4/2021

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

  Director: Unknown

  Writer: Unknown

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  7.2/10229 votes

  Chapter 2

  Season 1 Episode 2 - Aired 11/12/2021

  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

  Director: Unknown

  Writer: Unknown

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  7.3/10198 votes

  Chapter 3

  Season 1 Episode 3 - Aired 11/19/2021

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

  Director: Unknown

  Writer: Unknown

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  7.2/10175 votes

  Chapter 4

  Season 1 Episode 4 - Aired 11/25/2021

  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.

  Director: Unknown

  Writer: Unknown

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  7.2/10159 votes

  Chapter 5

  Season 1 Episode 5 - Aired 12/3/2021

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

  Director: Unknown

  Writer: Unknown

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  6.9/10174 votes

  Chapter 6

  Season 1 Episode 6 - Aired 12/10/2021

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

  Director: Unknown

  Writer: Unknown