This book was good. It's about a boy named Eli whose father has created an underground shelter in case of a nuclear attack. One night Eli and his family are rushed into the shelter and the door is closed not to open again for 15 years. Eli realizes that his twin was left on the outside. After 6 years, Eli's family is still underground and food starts to become an issue. There is a room with a yellow door that houses "the supplements". Very interesting book.