Kae Musik, NO.2 is the rudest guy and a gangster. He must live with an orphan named Jung Jae Young, who has the key to finding a diamond. The Sencream Gang is looking for this diamond. Meanwhile, Jung Jae Young starts to have feeling for Musik. Seeing her growing LOVE for Musik, another guy named Lee Woo Yun starts to gain feelings for Jae Young. At the same time Musik wonders if what he feels for Jae Young is LOVE–or just some other feeling. Where in the world is the diamond?