Rebellious schoolgirl Dana grieves for her younger sister, a once-happy kid who suddenly stepped in front of a train. Desperate to learn what happened, she explores her sister's online history, discovering a sinister social-media game.

A typical evening in a typical Belarusian family: Ian prepares dinner for his wife Kira and daughter Sonya. Things go off when he throws away a piece of gorgonzola. Ian receives a creepy video, Kira gaslights him and acts weird, and a phone robot summons him for KGB questioning. Panicked, he tries to flee, but his family stands in his way. The cheese seems to be the cause—until it doesn’t.