After Lin Xia’s mother passes away, Gu Yanshan brings home his adopted daughter, Su Wan. A single word—“Sister”—binds the two of them together.
Lin Xia remains guarded, yet she cannot resist Su Wan’s gentle advances. Having both lost their mothers, their wounded hearts slowly draw closer.
Su Wan has hidden her unrequited love for years, and every display of vulnerability has been carefully planned. Meanwhile, Lin Xia finds herself sinking deeper into forbidden feelings.
When the truth is finally revealed, the girls join forces to expose Gu Yanshan’s crimes, and the love they once suppressed can finally be displayed openly.