The Cage (2017) on Netflix

Plot summary

An enormous ship hangs in the sky above a planet whose people were wiped out by a superior intelligence, and it still gives no sign of life. Only three people are known to be left anywhere, Eva and Fausto among them; the two have kept each other company for years, and by now the world around them has stopped making sense. Dafne, another survivor, turns up and breaks the pattern the two had settled into. The three take to pleasure, spending their days as hedonists while aware they may be the last of their kind. The constant threat wears on Fausto.