Fifty years have passed since the war against the aliens. Sumire Ichigaya, age 18, works for a company that exterminates space pests in order to pay off her debts. One day, after being abducted by a UFO, Sumire's ordinary life is turned upside down. A mysterious voice echoes inside her head... Deadly space creatures attack... And to make matters worse, a military corporation begins targeting her as well—!? A girl-meets-alien story from the creator of "The Assassin Can't Kill the Old Lady Today Either".