Milo Pine, whose parents run Greenglass House, is enjoying his peaceful Christmas break when the smuggler's inn is suddenly full of unexpected guests Greenglass House inn is suddenly inhabited by a slew of unexpected guests. Not only are they unexpected at this time of year, but these guests are definitely odd--and that's saying something, considering the inn's usual array of visitors. Milo and his new friend Meddy are sure that the guests are each searching for something at Greenglass House. Things are starting to go missing, and someone is sneaking around the inn. Milo and Meddy are determined to uncover the mystery of Greenglass House before the thief can get their hands on the inn's hidden treasure.