Thirteen-year-old Mark Rogers knew that his Grandpa Luigi had Alzheimer"s but he hadn"t counted on it turning his life upside-down. When his mother suggests that the two of them move in with Grandpa and help care for him, Mark reluctantly agrees because his grandfather has always been something of a hero to him. He doesn"t know, however, how strange Grandpa"s behaviour has become or that the kids in his new school have a nickname for him: Crazy Luigi.