Lin Mujin and Chen Nianyi were childhood sweethearts, and they grew up together. Chen Nianyi, who has a lively personality, has been in love with his brother who is 6 years older than him since he was a child. When he was 17 years old, due to the death of his parents and the misunderstanding between Chen Nianyi and Lin Mujin, Chen Nianyi went to study in the United States. This separation caused the two to miss each other for six years. Six years later, what kind of love will happen between the two.