Heartland Stories: The Undercity part 1 (Engels)Strange things are happening at the small mining town of Coldstone. Miners have been disappearing and mysterious earthquakes are occurring more frequently. When her twin sister and father are among the latest people who have vanished in the mines, Abby teams up with a young archaeologist named Sam, who has his own reasons for investigating the mysterious mountain. As the two head deeper underground, they end up finding more than what they bargained for