高一女孩美嘉是个受很多男生喜欢的美少女，她的世界单纯而美好。同年级男生阿弘外表狂放桀骜不驯，一个偶然的机会美嘉与他擦肩而过，阿弘看到美嘉顿时有一眼千年的心动感。在阿弘执着的追求下，美嘉看到了阿弘不羁外表下温柔善良的一面，两人很快坠入爱河。就在美嘉享受甜蜜初恋的美好时，突然遭到几个坏男人凌辱。美嘉觉得无颜面对阿弘，可阿弘除了心疼美嘉就只剩对坏人的痛恨。阿弘找出并暴打坏人，也查出那些人是前女友找来的，阿弘怒不可遏。生活恢复平静后，某天美嘉欲言又止地告诉阿弘自己怀了他的孩子。阿弘郑重地去见美嘉父母，并承诺会养活美嘉和他们的孩子，美嘉非常感动。前女友再次发难，她把美嘉推下楼梯，美嘉流产。阿弘再次用他的温柔抚慰美嘉受伤的身体和心灵。然而就在美嘉身体恢复后，阿弘却对美嘉避而不见。直到美嘉亲眼目睹阿弘与别的女人亲吻，她痛彻心扉。心如死灰的美嘉在大学遇到一个对她百般呵护的男孩，美嘉才慢慢开始新的恋情。就在这时美嘉突然得知阿弘当初离开她的真相，阿弘身患绝症命不久矣。美嘉不顾一切跑到医院，在看到阿弘仍然戴着他们过去的戒指时，她一切都明白了。美嘉泣不成声

A high school girl Mika is a beautiful girl who is liked by many boys. Her world is simple and beautiful. Hiro, a boy in the same grade, has a wild and rebellious appearance. By chance, Mika passes him by. When Hiro sees Mika, his heart moves for a thousand years. Under Ahong's persistent pursuit, Mika saw the gentle and kind side of Ahong's unruly appearance, and the two soon fell in love. While Mika was enjoying the beauty of her sweet first love, she was suddenly insulted by several bad men. Mika felt ashamed to face Ahong, but Ahiro only felt sorry for Mika and hated the bad guys. Hiro finds out and beats up the bad guys, and also finds out that those people were recruited by his ex-girlfriend, Hiro is furious. After life returned to calm, one day Mika told Hiro that she was pregnant with his child. Ahong solemnly went to meet Mika's parents and promised to support Mika and their children. Mika was very moved. The ex-girlfriend attacked again, she pushed Meijia down the stairs, and Meijia had a miscarriage. Hiro once again used his tenderness to soothe Mika's injured body and mind. However, after Mika recovered, Hiro avoided seeing Mika. Until Meijia witnessed Ah Hong kissing another woman, she was heartbroken. The heartbroken Mika met a boy who cared for her in every possible way in college, and Mika slowly started a new relationship. At this moment, Mika suddenly learned the truth about Ahong leaving her. Ahong was terminally ill and died soon. Mika ran to the hospital desperately, and when she saw Hiro still wearing their old ring, she understood everything. Mika broke down in tears