The character of Krisha is an aging alcoholic who’s full of dread and foreboding but who’s going home for a family celebration. The press notes say that it’s Thanksgiving, but the movie never says what time of year it is. However, Thanksgiving doesn’t appear to be a good bet, since the crepe myrtles are blooming outside.
The rest of the family is concerned about Krisha’s return, wondering whether she’ll set off a full-scale disaster. At first, we don’t know the backstory, but it’s clear that Krisha is a mess.