The main character, Naomi, works for his father's waste collection company. He spends his days wishing that someday he could leave his parents' home. One day, Naomi meets Maki, a young man who lives with his blind mother-in-law, Midori. She always tells Maki about her travels in the world, but the truth is that she has never been abroad. When she gets seriously ill, Midori entrusts her dream of traveling the world to Maki. However, Maki is unable to travel abroad due to lack of funds, so he decides to create the "sounds" of places around the world with Naomi and send the recorded tapes to Midori. The two boys become intimate as they create various sounds together. However, Naomi and Maki are too clumsy to establish a real relationship.