Cast: Bang Soo-in, Kim Sung-chul, Yoo Hae-jin, Choi Moo-sung, Park Myung-hoon, Jo Sung-ha, Ryu Jun-yeol
Blind but outstanding acupuncturist 'Kyung-soo' has his talents recognized by 'Lee Hyung-ik', and enters the palace. Around then, Crown Prince So-hyun, who had been taken hostage to the Qing, returns after 8 years and while happy for his return, 'King In-jo' begins to feel uneasy. Then one night, 'Kyung-soo', who can faintly see in the dark, witnesses the murder of 'Crown Prince So-hyun' and tries to reveal the truth. But instead, he is met with bigger secrets, deeper conspiracies and threats endangering his life. After his son's death, the anxiety of 'King In-jo' deforms into madness and those involved in the murder 'Kyung-soo' had witnessed, begin to expose their true selves.
