19-year old CJ, has lost touch with her childhood friend, Sophia, ever since she left small-town Willow Springs for college the year prior. Realizing how much they've grown apart, Sophia insists that CJ spends fall break at her grandfather's cabin, where they used to spend summers together. Reluctant, CJ gathers her new group of friends to join her for a fall escape they won't soon forget. Jocelyn and Amber, city girls at heart, embrace the wooded retreat but their excitement quickly turns to dread when they discover a vagabond living in a run-down trailer on the property.
I Know What You Did Last Summer is an American horror media franchise owned by Sony Pictures Entertainment, consisting of four slasher films and one television series, and based on the 1973 novel by Lois Duncan.