This film takes the audience to a bygone era which is before the 19th century but the story shown is related to Malaysian society today. It tells the story of three young men - Gunung, Daik and Bercabang - who escaped from being slaves to the Orang Kaya of Seri Bentan. The three of them stopped in a town called Lang Buana on the edge of a river. When they arrived in the city, they were warmly welcomed because they thought it was the prince who could save the city from Sang Nira's attack. Trapped by the situation, the three young men had to disguise themselves as princes and devise war tactics to strengthen Lang Buana's defenses.