Mary and Tom are parentless Irish siblings who arrive in New York City via ocean liner in 1886 and quickly find themselves on a wild, cross-country journey aboard a transcontinental "Orphan Train" where they meet an extraordinary new friend who will change their lives forever.
Through a series of unfortunate events, three mummies end up in present-day London and embark on a wacky and hilarious journey in search of an old ring belonging to the Royal Family, stolen by ambitious archaeologist Lord Carnaby.
