Your Sister's Sister Movie Trailer HD - Plot synopsis: A comedy about doing the right thing with the wrong person. One year after his brother's death, Jack (#MarkDuplass, SAFETY NOT GUARANTEED) hasn't recovered. His best friend, Iris (#EmilyBlunt, THE FIVE-YEAR ENGAGEMENT), prescribes solitary reflection and sends him to her father's empty cabin. But she doesn't realise her sister, Hannah (#RosemarieDeWitt, RACHEL GETTING MARRIED), is there for similar reasons, having just walked out on a seven-year relationship. Over tequila shots, Hannah and Jack get acquainted. When Iris drops in unexpectedly, complications arise in the form of rivalry and more than a few surprising revelations. #YourSistersSister