What if there is an alien who settled down on the earth because of his crush on fluid pain relief medication smell? What if the destiny of the earth lies on just an ordinary pair of slippers? What if ‘Korean middle school students’ are known as the secret weapons of the earth to alien stars? This newest SF novel collection of the writer, who actually won the excellence award in 2016 SF Award, and in the 1st Han Nak-Won Science Fiction Competition, is so witty and cheerful. In this book, there are diverse aliens – the one who communicates brilliantly with humans, another one who tries to invade to root out the humans, and another one who works as a psychic in the neighborhood. Also, there are another youngster who wants to settle down on the alien star after losing his first love to his own friend, another teenager who is so innocent even without knowing the fact that he has the last voting right on whether they root out the humans, and another youngster who happens to be in a super-hero film accidentally becoming the human weapon. The writer has put his utmost efforts to write this book based on his intention to introduce Korean teenagers to aliens and the other way around. Therefore, readers will be able to fall in love with aliens and teenagers while reading this book.