Watch VoirFilms. Christa is unperturbed by her son's game: The boy is a fan of "Starship Enterprise". The two of them cheerfully communicate as Kirk and Spock. It is therefore hardly noticeable that Christa develops the first signs of paranoia, especially as deep mistrust is spreading throughout the country: the story is set in the spring of 1986, when a nuclear disaster has just occurred in Chernobyl. Christa's husband has to watch helplessly as his wife drifts into madness.