Zhang Heng is the top student in the high school science class. He is introverted and silent. He has a crush on Liu Yakun, the school beauty and top student in his class, but he never dares to express his feelings.
Liu Yakun has excellent grades and a superior family background, but is strictly controlled by his mother. He longs for freedom and understanding in his heart, and has a vague impression of Zhang Heng's talent.
