Su Yu, a high school student who lives a simple life with his father, faces a major change when his mother remarries a wealthy man, introducing him to his step-brother Wu Bi. Despite their initial differences, Su Yu being a cold and arrogant top student, while Wu Bi is an unreasonable underachiever, their relationship takes an unexpected turn after an accident. As they gradually warm up to each other, their bond grows stronger. However, when a heated fight arises, their true identities are revealed...