While Five-0 investigates the murder of a real estate agent whose body was found in the walls of one of his listings, Danny is thrown when his mother comes to Oahu with shocking news.

Five-0 aims to uncovers the sordid truth when a girl is taken from her home and her father is shot in the process. Meanwhile, Danny tries to get his parents back together and Jerry deciphers a code he found on the bottom of McGarrett's champ box.