At a tense gathering, a man confronts a woman named Millie and her sister, Liv, over an undisclosed dispute. Despite Millie's beauty, the man insults her intelligence and accuses her of causing trouble. The conflict escalates when Liv tries to leave with Millie, but others insist she must finish every drink on the table first, citing her promise as a Harper. As Liv suffers a sudden headache, the man offers to let Millie take her away only if Liv completes the drinking challenge, leaving the sisters trapped in a pressured standoff.