Sunshine girl Lin Xiaoyang's world is completely turned upside down when she meets Bingshan Professor Lu Chen. The girl's agility melted his cold disguise, but also led to a fierce confrontation with his "best friend" Shen Yu - two proud men punched each other for her.
And her best friend Su Yutong is stuck in the quagmire of her original family. When the down-and-out nobleman Shen Yu steps in to repay the huge debt of her gambler father, the two bruised souls collide violently. They ridiculed and tore each other apart, becoming each other's only salvation in despair, but they also pushed each other away time and time again because of their respective pains. The misunderstanding caused sisters Lin Xiaoyang and Su Yutong to turn against each other, and they punched each other out of abandonment and anger.
At the same time, Su Yutong's younger brother Jiang Chenhao protected his senior Shen Zhiyu in the most passionate and painful way - fighting against harm for her, even going to jail. This desperate pain finally shook the age gap.
Youth is a grand love affair. Amidst the torn misunderstandings, the confrontation of love rivals, the pain of redemption and the price of protection, they stumbled and grew up, using tears, laughter and countless "fighting" moments to engrave the most unforgettable love and hurt. When the glimmer of light tears through the darkness, can they find the courage to hold each other tightly in the pain?