Season 1

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  7.1/10835 votes

  Episode 1

  Season 1 Episode 1 - Aired 4/5/2024

  After a brutal attack, Jeong Su-in learns she may not be the same person as before. Choi Jun-kyung discovers the monsters are forming an organization.

  Director: Unknown

  Writer: Unknown

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  7.3/10720 votes

  Episode 2

  Season 1 Episode 2 - Aired 4/5/2024

  Looking for his sister, Seol Kang-woo investigates Saejin Church, where he finds Su-in. But he soon encounters trouble — and the two fight to escape.

  Director: Unknown

  Writer: Unknown

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  7.3/10690 votes

  Episode 3

  Season 1 Episode 3 - Aired 4/5/2024

  After raiding Saejin Church, Jun-kyung begins suspecting Kim Chul-min is hiding something — later tracking him down meeting with Su-in and Kang-woo.

  Director: Unknown

  Writer: Unknown

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  7.6/10703 votes

  Episode 4

  Season 1 Episode 4 - Aired 4/5/2024

  After revealing everything he knows to Chul-min, Kang-woo agrees to help save Su-in. But when the plan goes awry, lives are put at risk.

  Director: Unknown

  Writer: Unknown

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  7.2/10656 votes

  Episode 5

  Season 1 Episode 5 - Aired 4/5/2024

  Despite being on the run, Su-in tries to warn Jun-kyung. But as Team Grey's raid plays out, Su-in and Kang-woo realize it's all part of a bigger plan.

  Director: Unknown

  Writer: Unknown

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  7.5/10755 votes

  Episode 6

  Season 1 Episode 6 - Aired 4/5/2024

  Su-in meets with Seol Kyung-hee, who requests an alliance. But the parasites' ploy for power goes into full effect — and it's up to Heidi to stop them.

  Director: Unknown

  Writer: Unknown