In a town, Yeong-jin is a madman living with his father and his younger sister Yeong-hee. One day, Yeong-jin's friend Hyeon-gu comes to visit and becomes heartbroken at Yeong-jin's sorrowful state. He meets Yeong-hee there and the two fall in love. Meanwhile, Oh Gi-ho, the household manager of the town's evil landlord, has feelings for Yeong-hee and tries to rape her on a town festival night when all the other townspeople are gathered up in the plaza. Hyeon-gu appears just in time and the two start fighting. Oh Gi-ho is hit by the sickle wielded by Yeong-jin and shocked at the sight of blood, Yeong-jin regains his sanity but he has already killed Oh Gi-ho. Yeong-jin is handcuffed by Japanese police officers and dragged off beyond the hills of Arirang Mountain.