Air date: 2021-11-04

Runtime: 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.

Air date: 2021-11-12

Runtime: 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

Air date: 2021-11-19

Runtime: 58 min

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

Air date: 2021-11-25

Runtime: 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.

Air date: 2021-12-03

Runtime: 54 min

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

Air date: 2021-12-10

Runtime: 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.