Seok-a, who runs a snack corner in the university district and lives with his mother, falls into trouble due to his sense of justice. Bong-soo seeks revenge on Seok-a for the humiliation he suffered at a job interview due to his arrogance. He becomes even more furious seeing Yu-ri, who was married by family arrangement, meet Seok-a. Yu-ri, after going on a 007 date with her friend Bora, is kidnapped by Doo-shik's gang but is rescued by Seok-a. When taking the drunk Yu-ri to an inn, Seok-a becomes a victim of misunderstanding. At Bong-soo and Yu-ri's engagement party, Seok-a engages in a fierce battle with Bong-soo's gang. While chasing Bong-soo's car, who kidnapped Yu-ri, Seok-a falls into the water, leading to a speedboat chase. Justice ultimately triumphs, and the beautiful friendship between Seok-a and Yu-ri touches the heart.