What if an unknown stranger somewhere impersonates you and lives life? 24-year-old TAKIGAWA Misaki (TODO Umi) aspiring to be a non-fiction writer, receives a strange phone call saying TAKIGAWA Misaki is in a coma in a hospital. Learning that someone has posed as Misaki, she visits the hospital and finds an unexpected person. She begins to discover the woman's real name and the reason why she had to be someone else.