The box opens with a true Capt Underpants style 'Tra-la-laa' being sung to you. The box contains 4 of the 5 books that were in the 'New Capt Underpants Collection'. These are 'The Adventures of Capt U', 'Capt U and the attack of talking toilets', 'Capt U and naughty cafeteria ladies from OS' and 'Capt U and perilous plot of Prof Poopypants'. Didn't want you to double-buy as I have. Thanks Amazon! List of contents would help. My 9 year old daughter has read one of these at school and is desparate to read more as she thinks they're so funny.