On a private island off the coast of Massachusetts, Cadence Sinclair's story unfolds—a tale of a perfect, affluent family, a deep-rooted tradition of summers together, and four friends known as the Liars. During her fifteenth summer, Cadence suffers an accident, leading to chronic headaches and selective amnesia. She wrestles with fragmented memories, unable to reconcile her perceived imperfections with the family's expectations. As the elusive fragments of her past converge, Cadence is determined to uncover the suppressed truths of that fateful season. Hers is a journey of self-discovery entangled in family secrets, driven by a desire to belong and the aching need for the truth about the accident, her family, and the bond she shares with the Liars.