Love beyond Friendship

River Cavanaugh is best friends with Alison DiLaurentis, but what she doesn't know is that her best friend and her older brother Jason have been sneaking around behind her back.

River is Alison's number one best friend because she's incredibly popular with all the boys at school. Nobody can outdo River and Alison's looks, making them the most admired duo in the entire school. Their charm and beauty are unmatched, and everyone knows it. However, when Alison finds out about the secret relationship, she plans to confront them, but before she gets the chance, she mysteriously goes missing.

The night Alison disappears, River, Hanna, Aria, Emily, and Spencer search frantically for her, but their efforts are in vain. As the days go by, the girls start receiving mysterious texts from an unknown number signed "A." The messages reveal secrets only Alison knew, including the affair between River and Jason. The texts are threatening and ominous, hinting that soon everyone will know about River and Jason's secret relationship.

The girls are terrified and confused, unsure of who "A" could be and how they know so much. The messages drive a wedge between them, as trust becomes a rare commodity. They realize that whoever "A" is, they are determined to expose their secrets and wreak havoc on their lives. The mystery deepens, and the girls must band together to uncover the truth and protect their darkest secrets.