'Something Borrowed' revolves around Rachel, a perennial good girl and lawyer in Manhattan, whose orderly life derails after her 30th birthday. Rachel has always been content in the shadow of her captivating best friend, Darcy, but during her birthday bash, Rachel's sudden indiscretion with Darcy's fiance turns her world upside down. Torn between duty and desire, Rachel is confronted with the reality that life's complexities often blur the lines of morality, and difficult choices must be made. As Darcy's wedding approaches, Rachel's internal battle escalates, challenging the definition of true love, friendship, and the cost of happiness.