A mysterious planet nearly identical to ancient Earth, where human emotions and sensitivity are abnormally heightened, creating an environment that induces arousal. An exploration team, dispatched as part of measures against declining birth rates, becomes caught in unforeseen disturbances. No matter how prepared they are, they cannot resist the planet's overwhelming sensual effects, and the male team members, once trusted, begin attacking one another. Mayumi, the only surviving female crew member, resolves to maintain her composure amid despair and complete her mission. As she advances through the hot, humid jungle, she senses an eerie presence watching her. Desperate to soothe her parched body, she discovers an oasis and immerses herself in its sacred waters—triggering violent tremors and plunging her into sensual delirium. How will Mayumi survive under such conditions?