A year after the incident at the Mount, the police are still investigating the murders of Philomena and Caroline. The Mount has been cordoned off by the police. However, on Halloween night, a group of teenagers break in. They plan on holding a wedding between friends, conducted by a rather odd character, however, little did they know some unexpected guests would show up to crash the party.

A group of children go on an excursion in the Gibraltar Tunnels, when suddenly things start happening.