The series is based on a series of books written by Gabrielle Lord. It follows the adventures of Callum Ormond, a 15 year old who is forced to become a fugitive as he searches for the truth behind the death of a family member. The book series is in 14 installments, telling the story from January to December, and then Callum's story following the twelfth installment and Winter's story following Callum's.