The Nguyen kids are going on vacation! It's their first time in Vietnam and staying in Grandma Nội's childhood home, so they should be excited. As soon as they enter the house, though, something doesn't feel right. Why is the door to the ancestors' room always closed? And why can't they connect with Grandma Nội using their gifts, the way they can at home? The Nguyen kids are back for the fourth book, this...