Alex Wise feels like his world is ending. His best friend is leaving Los Angeles for the summer; his former friends and maybe sort-of crush hasn't spoken to him since he ditched Alex on the first day of sixth grade; and now Alex's mom is sending him and his annoying younger sister, Mags, on a cruise with their dad, who abandoned them. Then there's the creepy shadow monster that may or may not be stalking him. But none of that could prepare Alex for...