Ji Tong, who likes clouds, has been looking for his own rainbow. God made her meet the cold-looking Xun Ku, but she accidentally discovered a side of him that few people knew. On the other hand, Xuan Ku accidentally met the cheerful-looking but hurt-hearted Jiao Tong, and from then on she became determined to protect her. The two have been interacting in quarrels, but their relationship continues to sublimate... Can friendship withstand the test, can family ties continue to be maintained, and can love proceed smoothly?