Twelve-year-old Tip Tucci is uneasy with her latest assignment: write five pages on the True Meaning of Smekday for the upcoming National Time Capsule contest. Where should she begin? When the aliens, known as the Boov, landed on Earth and abducted her mother? Or when the Boov, led by Captain Smek, forced all Americans to relocate to Florida? While trying to complete her assignment, Tip befriends a rogue Boov named J.Lo and uncovers a Boov plot for another invasion.