After her father, a fighter pilot, dies unexpectedly, Gu Nian is raised by his fiancée and becomes family with Xia Ye, her brother in name only.
She’s carefree and bold; he watches over her with tender devotion.
They share a bond without blood ties, but their days together are filled with affection and companionship. When the boundary between family begins to blur, their secret love can no longer stay hidden in the early summer light.