Mai, who has been withdrawn since her mother's death, spends her days playing games and sleeping. Her father is worried about his daughter's habits but he doesn't know how to deal with it and asks for advice online.
Over the course of 24 hours, five characters will face dilemmas suffocating through another day in their dead end worlds. Their lives will intersect as the story builds to a tragic climax for some and liberation for others.
In the summer of 2001, Ryo Hagio, a high school student living in a country town by the sea, is spending his last summer vacation in high school with his classmates Manabu, Kosugi, and Hotta. One day, he meets Wang Jia-ling, a foreign exchange student from Taiwan who dreams of becoming a dolphin trainer. Ryo, who hates dolphins and the ocean, is at odds with Ling, but when he learns of her true feelings about coming to Japan, they begin to have a heart-to-heart talk...
Three high school students at the Robocon Research Club learned that an UFO will destroy the earth from Akane, a mysterious new student, who suddenly appeared in the area of Hayama and Iijima. They gather junk to save the Earth by building a three-body-combined robot and stand up to the enemies.