Literature teacher Sarah meets rich teen Chloe at a bar, who keeps a lost pearl earring of hers as a secret token. Chloe becomes Sarah’s student and forces private tutoring to get close, despite Sarah’s engagement to arrogant Mark. Later Chloe hacks Mark’s devices and exposes his cheating and abuse, ruining their engagement. Jealous classmate Lexi takes photos of their secret bond to blackmail Sarah. Chloe takes over the school’s holding group to protect Sarah, chases her for three years after Sarah leaves. Finally, Chloe wins her family’s approval and proposes to Sarah by the sea.
