스파이라면 만반의 준비를 갖춰야 합니다! 클레오와 에반 요원은 슈퍼 스파이가 되어 사악한 악당의 계획을 저지해야 하는 불가능한 임무를 부여받았어요. 하지만 바이퍼의 수중 은신처에 잠입해 과감하게 구조를 끝내고 올바른 열쇠를 찾아 살아서 탈출하기란 쉽지 않을 거예요!

Getting lost in a good book has never been this dangerous!

Cleo and Evan have a secret. A collection of books so dangerous they are locked up tight. A friend has vanished inside the pages of one of them. It's up to them to find the key that will set her free. A SPY MUST BE READY FOR ANYTHING! Agents Cleo and Evan have been given an impossible mission: become super-spies and foil the plans of an evil mastermind. But it won't be easy to break into the Viper's secret underwater lair, complete a daring rescue, find the right key, and get out alive!