A Japanese girl from a poor family named Hanako went on an adventure to study in a girl's Christian school in Tokyo. She found her passion in English and step by step made her dream come true.

People mysteriously start receiving voicemail messages from their future selves, in the form of the sound of them reacting to their own violent deaths, along with the exact date and time of their future death, listed on the message log. The plot thickens as the surviving characters pursue the answers to this mystery which could save their lives.

Yoriko Sudo believes in a new religious group Midoriinochikai, that worships water. She lives peacefully, devoting herself to the group daily.