Tomomi, who works as a speech therapist at a hospital, is told by her patient Seiko, a high school girl, that the death of Tachibana, a male doctor who recently passed away, was not an accident but a murder. Is this the truth? Or is she telling a lie? Despite their misgivings, the hospital's staff members head for an island in the south of Japan for a consolation trip. However, what awaited Tomomi at the hotel where she arrived was a call from the police, informing her that Seiko is dead. On the southern island, the unknown sides of her colleagues are revealed one after another. What is Tomomi's choice in the face of one disturbing incident after another? The thrilling suspense of paradise begins!