Yuka is one of six teenage girls whose sea vacation aboard a yacht descends into nightmare when criminals hijack the vessel. A subsequent shipwreck strands the group on a deserted island. During the ordeal, Yuka experiences sexual violence, leaving psychological and physical marks. This trauma fuels heightened fear and distrust within the group, complicating cooperation. Stranded on the island, the girls face ongoing threats from the criminals; Yuka and the others endure bondage, rape, and torture during captivity, severely testing their resilience and interpersonal dynamics. Ultimately, Yuka participates in the group's collective effort to overcome their attackers, leading to the girls achieving revenge against their captors by the conclusion of the events.