Ong Bak 2 is a 2008 Thai martial arts film co-directed by Panna Rittikrai and Tony Jaa, who also stars in the lead role. It is the standalone prequel to the 2003 film Ong-Bak and is set in 15th century Thailand. In the film, Tien trains himself in martial arts, where he becomes a lethal soldier and sets out to avenge his parents' death.