After escaping the lab, she is found by siblings Kyung-hee and Dae-gil. While she tries to adapt to the outside world, she is hunted by multiple factions—including secret laboratory staff, mercenaries, and rival "witch" program operatives—who seek to recapture or kill her.

A mysterious girl, known as "Ark 1" (played by Shin Si-ah ), wakes up in a secret laboratory as the sole survivor of a bloody raid.

While the film features a mostly new cast, Kim Da-mi (the protagonist from the first film) makes a special appearance. It is revealed that the new girl is the twin sister of the original "witch," Goo Ja-yoon. Production & Reception