Wren's Halloween plans go awry when she's made to babysit her brother, who disappears into a sea of trick-or-treaters. With her best friend and two nerds at her side, she needs to find her brother before her mom finds out he's missing.Wren's Halloween plans go awry when she's made to babysit her brother, who disappears into a sea of trick-or-treaters. With her best friend and two nerds at her side, she needs to find her brother before her mom finds out he's missing.