First grade is supposed to be exciting, but a scary rumor has just changed everything! According to a very knowledgeable second grader, your new teacher, Mrs. Watson, is actually a three-hundred-year-old alien with a purple tongue who steals baby teeth. This is terrible news because you have a huge secret: your very first tooth is loose! How can you possibly survive an entire school year without opening your mouth? From keeping your lips glued shut to hiding in plain sight, you will have to try every trick in the book to keep your tooth safe. This laugh-out-loud adventure perfectly captures the wild worries of a new school year and the wobbly milestone of losing a first tooth.