An urgent text summons Isa Wilde to Salten, where she spent her formative years at a boarding school enshrouded by marshes. Along with three friends, their old tradition of the 'Lying Game' - spinning complex webs of deceit - casts a dark silhouette on their present. The group now faces repercussions as remnants from their past are dredged up, and a sinister discovery on the beach triggers a reunion filled with secrets, betrayal, and a need to unearth the truth of a mysterious death that intertwines their fates. With the boundaries between truth and lie perilously thin, the game they once played now has deadly implications, leaving them to confront whether their friendship can withstand the weight of the unburied truths.