Theo's mom reveals her version of Ruddy Cavern's mysterious history while the search for Annabelle heats up.

Without blood to drink, Ruby becomes weaker and weaker by the day and turns to Theo for help. Meanwhile, Flora finds herself roped into Ian and Amber's evil plans.

Ruby relives some painful memories about her time spent in the caves and reveals some dark secrets about how the teenagers transformed into bloodthirsty vampires.