Duong Ha Vu abruptly dropped out of a prestigious international school to pursue his childhood sweetheart, transferring to her school. After rumors surfaced that she had a boyfriend, he resolutely decided to move out of his city and audaciously insisted his parents allow her to live with him. With his intense love, Duong Ha Vu could not accept anyone stealing his childhood sweetheart. Upon seeing Moc Yen Han, his childhood sweetheart, he embraced and kissed her in front of others to mark his territory and prevent anyone from approaching her. Subsequently, realizing the situation, Yen Han regretted her previous promises to Ha Vu. She decided to end her relationship with her rumored boyfriend, a decision made under Ha Vu's manipulative influence, as he had involved their parents to threaten her.