A reclusive billionaire summons six seemingly unrelated strangers to his secluded island estate off the coast of southern England, and aspiring detective Miranda Green can't resist the chance to attend. The grand house and stormy surroundings set a tense, atmospheric stage where polite conversation soon gives way to suspicion, hidden motives, and unsettling revelations.
When one of the guests is found dead, Miranda must rely on observation, intuition, and a knack for piecing together small clues to untangle a web of secrets and lies. Blending classic locked-room intrigue with modern twists, the film keeps the suspects close and the danger closer as alliances shift and shocking motives come to light, leading to a clever, satisfying showdown.