Kyle Keeley is the ultimate gamer. Whether it is a board game, a word puzzle, or the latest video game, Kyle is always ready to play. So when he learns that his absolute hero, the eccentric and brilliant game-maker Luigi Lemoncello, has designed the town's brand-new library, Kyle is determined to be there for opening night. He manages to win a highly coveted spot as one of twelve kids invited to an exclusive overnight lock-in. The library is a wonderland filled with interactive holograms, hover ladders, and endless games. But when morning arrives, the doors stay firmly locked. Mr. Lemoncello has designed the ultimate challenge. To find the hidden escape route, Kyle and the other kids must work together to solve every clue, crack every code, and decipher every secret puzzle hidden among the books. It is a race against time where reading just might save the day.