When Jack finds himself down on his luck, best friend Iris suggests he spend a weekend at her family's remote island retreat. Upon arriving Jack discovers Iris’s sister Hannah had the same idea and the two find solace together in sharing their issues and drunkenly kissing, but when Iris arrives the next morning unannounced she further complicates matters for an already confused and bumbling Jack. ‘Your Sister’s Sister’ is an enjoyably quirky and touching comedy drama.