Eli and Whit are enjoying their life together on the mountain when Whit is called into action for a secret mission at the Pentagon. While she is gone, the Cast Iron Farm comes to life, literally, when Eli discovers a mysterious cave that has a connection to Whit's past. Younger brother Brad joins the gang. When Whit returns, she plans an Appalachian Trail adventure with Brad and Mitch. Join Eli and family as their adventure at Cast Iron Farm continues.