There is a rose with thorns in everyone's heart, which they can't hold on to but can't bear to let go of. Shen Dongning's rose is Gu Cheng.
Shen Dongning spent her most beautiful years secretly falling in love with Gu Cheng. When she gathered enough courage to confess, Gu Cheng went to the other side of the earth.
When Gu Cheng knew that a girl liked him, that girl's secret love had lasted for five years. When he finally realized that he also liked the girl, the girl told him that he was giving up.
Gu Cheng decided to get his girl back.