Cinema worker Eri and her husband Fumiya have decided not to have children. They live happily together, sharing their joys and sadnesses. However, an incident begins to silently bring about change in their placid lifestyle.

A real estate agent, Shinji Sawaguchi finds a fallen meteorite by accident. On the next day, his missing sister Shiori shows up for the first time in ten years. Shinji can't help being agitated by her sudden return. On the other hand, unusual events start happening in his life, and her threatening melody spreads in the town. Including Shinji's fiancé Maki, the development of characters centers around Shiori's mysterious presence felt. Shiori's identity is hidden, and Shinji gets involved in a peculiar situation.

Shimada has been failing auditions one after another and worked as an extra in films. One day, his senior colleague invites him to audition for a company called "Friendship," where actors pretend to be the person the customer wants them to be. Accepting the job, he encounters a customer, Mio, who is planning terrorism.

A murder takes place in the town where Kenta Ochiai lives. The mutilated body is found by the riverside and Kenta, an elementary school boy, sees a crocodile swimming in the water. Being labeled as a liar in class, he decides to capture the creature with his friend. Was the body mutilated by the crocodile or the murderer? All connections lead to the riverside involving his teacher, parents and a girl practicing her trumpet across the river.