In the series The Third Day on Disney+, Katherine Waterston portrays Jess, a woman who becomes entangled in a mysterious and unsettling story. The show is divided into two parts: 'Summer' and 'Winter.' In the 'Summer' segment, Jess encounters a group of islanders who are preparing for a traditional festival. As she spends more time on the island, she begins to uncover dark secrets and experiences strange occurrences. In the 'Winter' segment, a man named Sam (played by Jude Law) arrives on the same island and finds himself in a surreal and dangerous situation. The Third Day is a gripping psychological thriller that keeps viewers on the edge of their seats with its atmospheric setting and compelling performances.