Parasyte: The Grey

April 5, 2024

Alien parasites begin taking human hosts across Korea. Convenience store worker Su-in (Jeon So-nee) is attacked but the parasite fails to reach her brain, leaving it trapped in her body. She names it Heidi. The government establishes a covert task force called The Grey Team.

April 5, 2024

Su-in and Heidi establish a tense coexistence. Heidi cannot control Su-in but can protect her body — sometimes brutally. Detective Seol Kang-woo (Koo Kyo-hwan) begins investigating the parasite phenomena.

April 5, 2024

The Grey Team's methods — lethal, classified, outside normal law — are shown in full. Su-in is both an asset and a liability to them. The Bucheon city scenes establish the series' ground-level, unglamorous Korea.

April 5, 2024

A hybrid human arrives from Japan — Shinichi Izumi (Fukuyama Shô), whose parasite coexists with him in a more developed way than Su-in and Heidi. His arrival changes everything the drama has established.

April 5, 2024

A parasite-controlled religious cult is uncovered — the drama's most viscerally disturbing episode. Su-in and Kang-woo must infiltrate it.

April 5, 2024

The series finale. Su-in and Heidi's relationship reaches its resolution — neither fully human nor fully parasite, but something new. One of Netflix's most-watched non-English shows of 2024.