Tien (Tony Jaa), the son of Lord Sihadecho -- a tragically murdered nobleman -- goes under the wing of Chernang (Sorapong Chatree), a renowned warrior and leader of the Pha Beek Krut who teaches Tien a variety of deadly fighting styles. Now a master of weapons and combat, Tien seeks out those who slayed his family. Jaa also directs and Sarunyu Wongkrachang co-stars in this martial arts thriller set in 15th-century Thailand.